# Talks/Seminars

Here you find the upcoming and past talks and colloquia. The colour code and abbreviations:
 Seminar of the Institute Quantum Theory Seminar General Relativity Seminar Video seminar of the SFB Colloquium of the Faculty Other Talks Seminar of Research Training Group

HS: Hörsaal (Lecture Hall), SR: Seminarraum (Seminar room), URZ Universitätsrechenzentrum (Computer Center)

### Upcoming Talks

 Fri, 2016-03-04 16:15 (HS 2, Abbeanum) Verteidigung der MasterarbeitAnika Dathe

### Calendar

February 2016
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March 2016
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You can also access a full calendar with extended functionality.

### Past Talks

Talks from 2014-10-01 up to Today
 Thu, 2016-02-11 16:15 (SR 5, Helmholtzweg 4) The fate of Halpern-Huang directionsDr. Alfio Bonanno (INAF, Catania) Wed, 2016-02-10 14:15 Cosmological Implications of Quantum Quadratic GravityDr. Alfio Bonanno (INFN Catania) Mon, 2016-02-08 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Habilitationsvorstellung: Optische Signaturen des Quantenvakuums in starken elektromagnetischen FeldernDr. Felix Karbstein, FSU Jena Thu, 2016-02-04 14:15 Nonperturbative renormalization group flow for scalar fields in de Sitter spaceDr. Maxime Guilleux, Univesite Paris Diderot Wed, 2016-02-03 16:15 Reserved Thu, 2016-01-28 14:15 Phase diagram of an asymptotically free model through lattice dualizationDr. Falk Bruckmann, Universität Regensburg Wed, 2016-01-27 16:15 (HS 2, Abbeanum) Numerics and Astrophysics of Neutron StarsProf. Stephan Rosswog, Universität Stockholm Tue, 2016-01-26 16:15 (SR 5, Helmholtzweg 4) Higgs-InflationDr. Javier Rubio, Heidelberg Mon, 2016-01-25 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Wie könnte man die Gravitation beeinflussen?Prof. Dr. Martin Tajmar, TU Dresden Thu, 2016-01-21 14:00 Higgs inflation and the cosmological frame debateDr. Christian Steinwachs, Universität Freiburg Wed, 2016-01-20 16:15 (HS 2, Abbeanum) Binary Black holes: Numerical simulations and their applicationsProf. Harald Pfeiffer, Canadian Institute of Theoretical Astrophyiscs, University of Toronto Thu, 2016-01-14 14:15 Worldsheet string theory in AdS/CFT: perturbation theory and beyondDr. Valentina Forini, HU Berlin Abstract: It is discussed how the integrable structure underlying the AdS/CFT system and the cross-fertilization of established field-theretical tools to strings can be used to enhance our knowledge on the string sigma model and thus the predictivity of the duality. Tue, 2016-01-12 16:15 Monte Carlo Methods for Approximation ProblemsRobert Kunsch Mon, 2016-01-11 18:00 (Aula der FSU) Antrittsvorlesung: Predicting new materials and their properties with supercomputingProf. Dr. Silvana Botti, FSU Jena Wed, 2016-01-06 16:15 (HS 2, Abbeanum) Conformal properties of the Schwarzschild-de Sitter spacetimeDr. Juan Valiente-Kroon, School of Mathematical Sciences at Queen Mary, University of London Abstract: In this talk I will show how the asymptotic initial value problem for the conformal Einstein field equations, whereby one prescribes initial data on a spacelike hypersurface representing the conformal boundary, can be used to study various conformal aspects of the Schwarzschild-de Sitter spacetime. The analysis presented covers the subextremal, extremal and hyperextremal cases. The implications of this analysis for the study of nonlinear perturbations of members of the Schwarzschild-de Sitter family of spacetimes are discussed. Tue, 2016-01-05 16:15 (SR 5, Helmholtzweg 4) Introduction to Information-Based Complexity (IBC)Robert Kunsch Fri, 2015-12-18 16:15 Lösung axialsymmetrischer Wellengleichungen in der Kerr-Metrik durch eine Laplacetransformations-MethodeVerteidigung der Masterarbeit Jörg Dommaschk, FSU Jena Thu, 2015-12-17 14:15 Maximally supersymmetric Yang--Mills-Theory on the latticeDr. David Schaich Syracuse University Wed, 2015-12-16 16:15 (HS 2, Abbeanum) Cancelled.Dr. Omar Zanusso (TPI, FSU Jena) Thu, 2015-12-10 14:00 A holographic phase diagram of QCD and the critical pointRoman Yaresko (Helmholtz-Zentrum Dresden-Rossendorf) Tue, 2015-12-08 16:15 From spectral functions to viscosity in the Quark-Gluon PlasmaDr. Nicolai Christiansen, Universität Heidelberg Mon, 2015-12-07 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Cosmic Matter in the LaboratoryProf. Dr. Horst Stöcker, Universität Frankfurt Fri, 2015-12-04 16:15 (HS 2, Abbeanum) Nichtlineare Wechselwirkungen ebener GravitationswellenVerteidigung der Masterarbeit von Marco Vockert Thu, 2015-12-03 14:15 (SR 5, Helmholtzweg 4) The Overlap Dirac operator and its Application to the Quark Sector of QCD in Coulomb GaugeDr. Markus Pak (Uni Graz) Fri, 2015-11-27 16:15 A New ADER-DG Scheme based on a Local Continuous Runge-Kutta MethodVerteidigung der Masterarbeit Matthias Pilz, FSU Jena Tue, 2015-11-24 16:15 (SR 5, Helmholtzweg 4) Towards quasicrystals in non-commutative spaces Felix Pogorzelski Abstract: In 2011, Dan Shechtman was awarded the Nobel prize in chemistry for his discovery of physical quasicrystals. Via diffraction experiments, he observed in 1982 that for some materials, there are interference patterns whose symmetries are not compatible with crystallographic structures in three-dimensional space. This triggered the mathematical examination of those structures as Dirac combs over uniformly discrete point sets in Euclidean space. In the past decades, mathematical diffraction theory evolved into a beautiful and rich research topic combining various disciplines such as functional analysis, fourier analysis and dynamical systems. One method to obtain a large class of interesting quasicrystals is via so-called cut-and-project schemes, introduced by Meyer in the 70s. This talk presents the basics of diffraction for cut-and-project schemes over locally compact abelian groups and describes how the theory can be extended to the non-commutative case. This is joint work with Michael Björklund (Chalmers Göteborg) and Tobias Hartnick (Technion Haifa). Mon, 2015-11-23 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Carrier lifetime and diffusion constant: How to determine solar Cell material Proberties by time-resolved photoluminescenceProf. Dr. Roland Scheer, MLU Halle-Wittenberg Thu, 2015-11-19 14:15 Entanglement entropy in a holographic model of the Kondo effectMario Flory MPI Munich Starting from a holographic model a magnetic impurity interacting with a strongly coupled system, I focus on the challenges of computing gravitational backreaction in this model, which demands a study of the Israel junction conditions. I present general results on these junction conditions which may be relevant more generally in the AdS/boundary CFT correspondence. Furthermore, similar junction conditions for a bulk Chern-Simons field appearing in the holographic Kondo model are discussed. I then focus on the computation and interpretation of entanglement entropy in the holographic Kondo model. The holographic g-theorem will be discussed as well as a geometric construction that allows to reproduce results obtained by conformal perturbation theory on the boundary. Wed, 2015-11-18 16:15 (HS 2, Abbeanum) Theoretical spectroscopy: how to calculate electronic excitations of materials from first-principlesProf. Silvana Botti, FSU Jena Tue, 2015-11-17 16:15 (SR 5, Helmholtzweg 4) Conformal Field TheoryProf. Martin Ammon Fri, 2015-11-13 10:15 (SR 2, HHW 5 (gelbes Haus)) Atomic Quantum Simulation of Abelian and non-Abelian Gauge Theories (II)Prof. Wiese Thu, 2015-11-12 16:15 (SR 5, HHW 4) Atomic Quantum Simulation of Abelian and non-Abelian Gauge Theories (I)Prof. Wiese Tue, 2015-11-10 16:15 (SR 5, Helmholtzweg 4) Conformal Field TheoryProf. Martin Ammon Mon, 2015-11-09 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Von seinen eigentlichen künstlerischen Leistungen wissen wir wenig. - Der Architekt Ernst Neufert und das Abbeanum in JenaDip.-Ing. Udo Gleim, TU Darmstadt Thu, 2015-11-05 17:00 EhrenpromotionProf. Dr. Anne L'Huillier, Universität Lund (Schweden) HS 1, Max-Wien-Platz Tue, 2015-11-03 16:15 (SR 5, Helmholtzweg 4) Conformal Field TheoryProf. Martin Ammon Thu, 2015-10-29 14:15 Massless modes and Spontaneous Symmetry Breaking in QFT and HolographyDr. Amadeo Jimenez Alba FSU Jena Wed, 2015-10-28 16:15 (HS 2, Abbeanum) Constructing interacting QFTs via OPEsDr. Markus Fröb, Universität Leipzig Abstract: I will review a new approach to constructing interacting (Euclidean) QFTs in 4 dimensions via the operator product expansion (OPE), and a number of important results that have been proven in the last years using the Polchinski-Kopper flow equation framework, such as existence, convergence and factorisation properties of the OPE in a perturbative sense for non-gauge theories. Lastly, I present on-going work on the generalisation to gauge theories. Mon, 2015-10-26 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) 100 Jahre Forschung zur allgemeinen Relativitätstheorie (Physikalisches Kolloquium anläßlich des 75. Geburtstages von Prof. Dr. Gernot Neugebauer)Prof. Dr. Hubert Goenner, Universität Göttingen Zusammenfassung: Nach einer kurzen Einführung in die Allgemeine Relativitätstheorie gibt der Vortrag eine historisch-chronologisch angeordnete Übersicht über die Forschung seit Einsteins Publikation von 1915 und eine Auswahl der beteiligten Personen. Die aus der Theorie folgenden beobachtbaren Effekte, durch die die Theorie eindrucksvoll bestätigt wurde, werden ausführlich besprochen ebenso wie zukünftige geplante Messungen. Die Frage, ob es es "eine goldene Periode" der Gravitationsforschung gegeben hat, wird zum Schluss kommentiert. Thu, 2015-10-22 14:15 (SR 5, Helmholtzweg 4) Nucleon structure from Lattice QCD at nearly physical quark massesDr. Andre Sternbeck Tue, 2015-10-20 16:15 (SR 5, Helmholtzweg 4) Introduction to Lattice QCDDr. Andre Sternbeck Tue, 2015-09-01 16:15 (SR 5, Helmholtzweg 4) Multicritical Point and Competing Orders of Graphene's Dirac ElectronsLaura Classen, Heidelberg Tue, 2015-07-21 16:15 (SR 5, Helmholtzweg 4) Invariant classification and limits of superintegrable systems Dr. Jonathan Kress, University of New South Wales (Sydney) Abstract: A classical Hamiltonian system possessing more globally defined conserved quantities than degrees of freedom is said to be superintegrable. Such systems possessing the maximum number of conserved quantities quadratic in the momenta have been much studied because of their connection with separation of variables and special functions. In two dimensions it has been shown that singular limits between non-degenerate' superintegrable systems mirror limits between othogonal polynomials in the Askey scheme. As a first step in extending this to higher dimensions, all second order superintegrable systems with a non-degenerate' potential have recently been classified and shown to arise by singular limits from a generic system on the 3-sphere. This classification and the relationships between the systems, which is joint work with Joshua Capel and Sarah Post, will be discussed. Thu, 2015-07-16 14:15 (SR 5, Helmholtzweg 4) Gauge Theory of the (infinite-dimensional) Translation Group and GravitationDr. Christian Wiesendanger, Zurich Short Abstract: The seminar will address two interrelated questions: - What if inertial and gravitational masses would differ off the mass shell? Could this be the basis of a theory of gravitation? - Can gauge theories of infinite-dimensional gauge groups (example is the 4-dim Translation Group) be mathematically consistently defined so that the classical gauge field Hamiltonian is positive-definite and the quantum theory renormalizable? Fri, 2015-07-10 16:15 (HS 2, Abbeanum) Finite differencing schemes for GLM-RMHD (Master Thesis Defense)by Tom Dörffel A class of finite differencing high-resolution shock-capturing methods for special relativistic magnetohydrodynamics is presented. The divergence condition is controlled by the divergence cleaning approach of Dedner (2002). By performing a series of standard tests the schemes are proven to be high-order accurate for smooth solution and stable in the case of strong shocks. Tue, 2015-07-07 16:15 (SR 5, Helmholtzweg 4) On the phase structure of imbalanced fermionic systemsDr. Tina Herbst, ITP Heidelberg Tue, 2015-06-30 16:15 QCD effective potential with strong magnetic fieldsDr. Sho Osaki (KEK, Japan) Mon, 2015-06-29 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Die Neudefinition des Kilogramm: Aktueller Stand und mögliche Auswirkungen auf die Darstellung und Weitergabe der EinheitDr. Michael Borys, Physikalisch-Technische Bundesanstalt Tue, 2015-06-23 16:15 (SR 5, Helmholtzweg 4) Exploring some elliptic operators in Gravitation and Physical Oceanography Dr. Jose Luis Jaramillo, Universität Brest Abstract: We discuss two physical problems in which the study of the spectral properties of certain elliptic operators, related to the Laplace-Beltrami operator on compact Riemannian manifolds, appear naturally. The first problem dwells in a gravitational context, namely the stability of black hole apparent horizons, and addresses the properties of a non-selfadjoint elliptic operator defined on closed codimension-2 surfaces. The second problem deals with the slow motions in the ocean and brings about the discussion of the Laplace-Beltrami operator associated with an effective metric in the oceanic basic, namely a compact manifold with boundaries. The two problems are technically and conceptually related, in particular through the spectral approach we adopt for their study. The main goal in this talk is to present a brainstorm exercise aiming at identifying the most suited mathematical strategy for these problems. Thu, 2015-06-18 14:15 (SR 5, Helmholtzweg 4) How much nonperturbative is the nonperturbative regime of QCD?Dr. Matthieu Tissier, LPTMC (Laboratoire de Physique Théorique de la Matière Condensée), Université Pierre et Marie Curie, Paris. ABSTRACT Studying the high energy regime of QCD is a problem that can be tackled by perturbation theory. This is a consequence of asymptotic freedom, which states that the coupling constant of QCD decreases when increasing the energy. The low energy regime (often called the "nonperturbative regime") is much more difficult to access, mainly because the standard perturbation theory is not applicable anymore. Nonetheless, I will discuss the possibility of studying the low-energy regime of QCD perturbatively. The main idea is to perform perturbation theory not around the usual Faddeev-Popov action, but around a simple extension of the latter, known as the Curci-Ferrari model. I will discuss the properties of this model and present several 1-loop calculations 1) for correlation functions 2) for the phase diagram of QCD. Comparison with lattice data show that all these quantities can be reproduced with a precision of the order of 15-20%. Mon, 2015-06-15 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Power and Magnet Applications of High Temperature SuperconductorsProf. Dr. Bernhard Holzapfel, Karlsruher Institut für Technologie Thu, 2015-06-11 14:15 (SR 5, Helmholtzweg 4) On the Search for Inhomogeneous Phases in Fermionic ModelsDr. Felix Karbstein Helmholtz-Institut Jena We revisit the Gross-Neveu model with N fermion flavors in 1+1 dimensions and compute its phase diagram at finite temperature and chemical potential in the large-N limit. To this end, we double the number of fermion degrees of freedom in a specific way which allows us to detect inhomogeneous phases in an efficient manner. We show analytically that this "fermion doubling trick" predicts correctly the position of the boundary between the chirally symmetric phase and the phase with broken chiral symmetry. Most importantly, we find that the emergence of an inhomogeneous ground state is predicted correctly. We critically analyze our approach based on this trick and discuss its applicability to other theories, such as fermionic models in higher dimensions, where it may be used to guide the search for inhomogeneous phases. Thu, 2015-06-04 14:15 (SR 5, Helmholtzweg 4) Glueballs in the Dyson-Schwinger approachDr. Helios Sanchis Alepuz, Justus-Liebig Universität, Gießen Tue, 2015-06-02 16:15 (SR 5, Helmholtzweg 4) The Topology of Chiral Vector Bundles (topological insulators of type AIII)Dr. Giuseppe de Nittis, Friedrich-Alexander-Universität Erlangen-Nürnberg The classification of topological states of matter is an important hot topic in mathematical physics. In this talk I will describe a new approach to the classification of topological quantum systems in class AIII which is based on the study of a new category of vector bundles. The objects of this category, the chiral vector bundles, are pairs constituted by a complex vector bundle along with one of its automorphisms. We provide a classification for the homotopy equivalence classes of these objects which is based on the construction of a suitable classifying space. The computation of the cohomology of the latter allows us to introduce a proper set of characteristic cohomology classes: Some of those just reproduce the ordinary Chern classes but there are also new odd-dimensional classes which take care of the extra topological information introduced by the chiral structure. Chiral vector bundles provide the proper geometric model for topological quantum systems in class AIII, namely for systems endowed with a (pseudo-)symmetry of chiral type. The classification of the chiral vector bundles over sphere and tori (explicitly computable up to dimension 4) recover the commonly accepted classification for topological insulators of class AIII which is usually based on the K-group K1. However, this new classification turns out to be even richer since it takes care also for the possibility of non trivial Chern classes. Mon, 2015-06-01 17:15 (Hörsaal 1 Abbeanum, Fröbelstieg 1 (PAF Kolloquium)) Keine Panik! Die Physik der Fußgängerdynamik und EvakuierungsprozesseProf. Dr. Andreas Schadschneider, Universität Köln Tue, 2015-05-26 16:15 (SR 5, Helmholtzweg 4) Entanglement entropy as a probe for quantum gravityDr. Michael Ferlaino University of Swansea, UK Thu, 2015-05-21 14:15 (SR 5, Helmholtzweg 4) Induced QCD with Nc-1 auxiliary bosonic fieldsDr. Bastian Brandt, Universität Regensburg Wed, 2015-05-20 16:15 (SR 5, Helmholtzweg 4) Binary Neutron Stars with SpinProf. Wolfgang Tichy, Florida Atlantic University Note: Changed time from usual slot on Tuesday to Wednesday Tue, 2015-05-19 16:15 (SR 5, Helmholtzweg 4) Modeling Liquids and Bulk Metallic GlassesProf. Jean Bellissard, Georgia Institute of Technology Atlanta, USA Mon, 2015-05-18 16:15 (HS 2, Abbeanum) New efficient algorithm for the isometric embedding of 2-surface metrics in 3 dimensional Euclidean spaceWolfgang Tichy, Florida Atlantic University We present a new numerical method for the isometric embedding of 2-geometries specified by their 2-metrics in three dimensional Euclidean space. Our approach is to directly solve the fundamental embedding equation supplemented by six conditions that fix translations and rotations of the embedded surface. This set of equations is discretized by means of a pseudospectral collocation point method. The resulting nonlinear system of equations are then solved by a Newton-Raphson scheme. We explain our numerical algorithm in detail. By studying several examples we show that our method converges provided we start the Newton-Raphson scheme from a suitable initial guess. Our novel method is very efficient for smooth 2-metrics. Wed, 2015-05-13 16:00 (HS 2, Abbeanum) Spinning particle in a Kerr background Dr. Georgios Lukes-Gerakopoulos, Institute of Theoretical Physics, Charles University in Prague, Czech Republic Tue, 2015-04-28 16:15 Modeling the Electronic Properties of GrapheneProf. Lorenz von Smekal - Technische Universität Darmstadt Fri, 2015-03-06 16:15 (HS 2, Abbeanum) Das Spätzeitverhalten relativistischer Wellen (Masterverteidigung)Martin Becker, FSU Jena Wed, 2015-01-28 17:15 (Seminarraum HI Jena, Fröbelstieg 3) Lightlike inhomogenities in worldline pair creationDr. Anton Ilderton, Chalmers University Göteborg The locally constant field approximation (LFCA) is commonly used to calculate the nonperturbative pair production probability in electromagnetic fields. In certain classes of fields, for example longitudinal electric fields depending on lightfront time, the LCFA is known to be exact. Using the worldline description of the effective action, we show that the reason for this is closely tied to the zero-mode problem of lightfront quantisation, and the so-called “triviality” of the lightfront vacuum. Tue, 2015-01-27 16:15 (SR 5, Helmholtzweg 4) The Callias Index Theorem Revisited Dr. Marcus Waurick, Technische Universität Dresden Wed, 2015-01-21 16:15 (HS 2, Abbeanum) New Frontiers in integrated photonics: supersymmetry and unphysical phenomenaProf. Dr. Alexander Szameit, IAP Universität Jena Tue, 2015-01-20 16:15 (SR 5, Helmholtzweg 4) Asymptotic Safety in GravityDr. Astrid Eichhorn, Imperial College London Wed, 2015-01-14 16:00 (SR 309, Carl-Zeiß-Str. 3) From Schwarzschild to General Relativity: modeling physical phenomena with the help of geometryDr. Carla Cederbaum, Universität Tübingen Tue, 2015-01-13 16:15 Spectral theory for continuum one-dimensional quasicrystal models Dr. Christian Seifert, Technische Universität Hamburg-Harburg We consider an ergodic family $(H_\omega)_{\omega\in\Omega}$ of continuum one-dimensional Schr\"odinger operators, where we allow for measures as potentials. We show that the random operator $H$ has Cantor type spectra of Lebesuge measure zero under suitable finite local complexity conditions on the potentials. Such operator families appear in the study of quasicrystalline models. Thu, 2015-01-08 14:15 (SR 5, HH 4, instead of the quantum theory seminar) Perturbative Quantum Gravity IIIProf. Ilya Shapiro Universidade Federal de Juiz de Fora Wed, 2015-01-07 16:15 (HS 2, Abbe., instead of the seminar of the institute) Perturbative Quantum Gravity IIProf. Ilya Shapiro Universidade Federal de Juiz de Fora Tue, 2015-01-06 16:15 (SR 5, Helmholtzweg 4) Perturbative Quantum Gravity IProf. Ilya Shapiro Universidade Federal de Juiz de Fora Thu, 2014-12-18 14:15 Critical behavior in spherical and hyperbolic spaceDr. Dario Benedetti (AEI Potsdam) Wed, 2014-12-17 16:15 A Simple Proof of the Kochen-Specker Theorem on the Problem of Hidden VariablesProf. Norbert Straumann, Universität Zürich Tue, 2014-12-16 16:15 (SR 5, Helmholtzweg 4) Rendering integrands positive - subset method for lattice QCD at high densityDr. Falk Bruckmann Universität Regensburg Wed, 2014-12-10 16:00 (HS 2, Abbeanum) apl.: AG Fachdidaktik der Physik und AstronomieProf. Lotze Tue, 2014-12-09 16:15 (SR 5, Helmholtzweg 4) (Non)-Fermi LiquidsDr. Tilman Enss Ruprecht-Karls-Universität Heidelberg Fri, 2014-12-05 11:30 (Rosensäle) Binary neutron stars: what we understand and what we don'tFrom Luciano Rezzolla for the GWA14 conference I will review the recent progress made in modelling binaries of compact stars and the role played by magnetic fields and the equation of state in their evolution. Special attention will be paid to highlighting how the progress of ab-initio fully relativitistic calculations can be used to explain several aspects of the phenomenology of short gamma-ray burst, but also how new observations on the X-ray afterglows represent new riddles for the theoretical modeling. Fri, 2014-12-05 10:00 (Rosensäle) Constraining the nature of gravitational waves with binary pulsar experimentsFrom Paulo Freire for the GWA14 conference In this talk I present some recent pulsar timing experiments for double neutron stars that test general relativity's quadrupolar gravitational wave emission formula with unprecedented precision. I then present the results of timing of millisecond pulsar - white dwarf systems that severely constrain the emission of dipolar gravitational waves (DGW) for a wide range of neutron star masses. Apart from constraining (and in some cases excluding) alternative theories of gravity that predict DGW emission, these results reinforce our confidence in the templates being used to search for the GW signal of NS-NS and NS-BH inspiral events in the advanced LIGO and Virgo detectors. Fri, 2014-12-05 09:00 (Rosensäle) Highest order post-Newtonian dynamics of non-spinning and spinning compact binaries in general relativityFrom Gerhard Schäfer for the GWA14 conference The talk delivers insight into the calculations of highest order post-Newtonian (PN) Hamiltonians for binary black holes. The conservative dynamics is presented up to 4 PN order for binaries with both non-spinning and spinning components, where the spins are counted of 0.5 PN order. The related dissipative radiation reaction dynamics is known up to 4.5 PN order. As application, the Innermost Stable Circular Orbit for spinless binaries is given through 4 PN order and the test-body limit is compared with the exactly known ISCO of a test-body orbiting a Schwarzschild black hole. Thu, 2014-12-04 10:00 (Rosensäle) Binary black holes: Waveform modeling and two-body dynamicsFrom Harald Pfeiffer for the GWA14 conference This talk will introduce the Spectral Einstein Code, a general relativistic code to solve the inspiral and merger of two black holes. I will give an update on numerical results with SpEC, and will discuss several applications of the simulations, among them the construction of waveform models within the effective-one-body formalism, the study of gravitational self-force effects through comparable-mass binary black hole simulations, and a comparison of the post-Newtonian precession dynamics with numerical simulations. Thu, 2014-12-04 09:00 (Rosensäle) Gravitational waves from coalescing neutron star binariesFrom Masaru Shibata for the GWA14 conference Wed, 2014-12-03 10:00 (Rosensäle) Post-merger Oscillations in Binary Neutron Star Mergersfrom Nikolaos Stergioulas for the GWA14 conference Because of the recent discovery of two-solar-mass neutron stars, the equation of state of high density matter is likely to be sufficiently stiff to allow for a long-lived remnant, when two neutron stars merge. The merger excites a number of oscillation modes, having large (nonlinear) amplitude, that are interesting as gravitational waves sources for second- and third-generation interferometric detectors. Apart from a dominant linear oscillation mode, additional nonlinear contributions appear. I discuss the main properties of these oscillations as well as the prospects of constraining the mass and radius (and thus the equation of state) with future detections. Wed, 2014-12-03 09:00 (Rosensäle) Searching for gravitational waves from the early Universefrom Fabian Schmidt for the GWA14 conference Tue, 2014-12-02 11:30 (Rosensäle) Gravitational wave detection using squeezed lightfrom Roman Schnabel for the GWA14 Conference Current gravitational wave (GW) detectors are Michelson-type kilometre-scale laser interferometers measuring the distance changes between in vacuum suspended mirrors. The sensitivity of these detectors is limited by quantum noise of the laser light. Since 2010, GEO600 has been using so-called nonclassical light that has a ‘squeezed’ quantum noise, and it has been demonstrated that squeezed light is able to increase the GW detector sensitivity at shot-noise limited frequencies. In future, squeezed light might be used to further improve the sensitivity of GW detectors, then also at radiation pressure noise dominated frequencies and at frequencies where photon-phonon scattering is limiting the detectors performance. Tue, 2014-12-02 10:00 Gravitational waves from black-hole binariesfrom Mark Hannam for the GWA14 Conference Tue, 2014-12-02 09:00 Progress in Three-dimensional Supernova Modelingfrom Hans-Thomas Janka for the GWA14 conference 3D supernova simulations have become possible only very recently and have already led to the discovery of novel and unexpected phenomena, although they still need to confirm the basic theoretical concepts of the explosion mechanism. The talk will review the status of 3D modeling and interesting new perspectives to probe the supernova core dynamics by neutrinos and gravitational waves measured in the case of a next galactic event. Mon, 2014-12-01 19:00 (Max-Wien-Platz 1, Lecture Hall 1) Gravitationswellenastronomie: Bald Neues von der dunklen Seite des Universums! Public Talk of the GWA14 Conference from Karsten Danzmann Können wir das Universum hören? Auf den ersten Blick ist das eine unsinnige Frage, denn natürlich gibt es im Weltall keine Luft, in der sich der Schall ausbreiten könnte. Wenn aber un­sere Ohren nur empfindlich genug wären, dann könn­ten sie auf eine besondere Art von Wellen reagieren: auf Gravitationswellen! Vor mehr als 90 Jahren sagte Al­bert Einstein die Existenz von Gravitationswellen als Konsequenz seiner allgemeinen Relativitätstheorie vor­aus. Gravitationswellen sind winzige Verbiegungen des Raumes und der Zeit, die von schnellbewegten, großen Massen erzeugt werden und sich mit Lichtgeschwindig­keit wellenförmig ausbreiten. Sie wurden noch nie di­rekt nachgewiesen. Mehrere laserinterferometrische Gravitationswellendetektoren mit Armlängen von Ki­lometern werden gegenwärtig auf der Erde betrieben, um Gravitationswel­len zu erforschen, darunter auch GEO600 in der Nähe von Hannover. Bald folgen Detektoren im Weltraum mit Millionen km Armlänge, insbesondere die Satelliten-Mission LISA. Ausgangspunkt für diese geheimnis­vollen Wellen könnten z. B. verschmelzende Doppel­sterne, Neutronensterne, Supernovae, Schwarze Löcher und der Urknall sein. Ihre Beobachtung erfordert modernste Lasertechnologie und Messungen an der quantenmechanischen Nachweisgrenze. Mon, 2014-12-01 15:00 (Rosensäle) Beyond the second generation of gravitational wave detectorsfrom Ronny Nawrodt for the GWA14 Conference Gravitational wave detectors are currently upgraded to the 2nd generation achieving extremely high sensitivities in a wide frequency band. A first direct detection of gravitational waves is expected once these instruments are getting online. Such a detection will mark the starting point for a gravitational wave based astronomy. Thus, detectors of the third generation are designed to be used as efficient astronomical observatories. For this purpose the sensitivity of the 2nd generation detectors has to be enhanced. As the sensitivity of current instruments approaches the thermal noise floor of their fused silica components a radical change of materials is necessary. Additionally, 3rd generation detectors will be operated at cryogenic temperatures to further reduce thermal noise and increase their sensitivity. This talk will give an overview of proposed technologies towards 3rd generation detectors leading to a 10 times higher sensitivity throughout the audio band. The focus will lie on the selection of materials for the optics as well as the suspension elements according to their properties. The characterisation of these materials and the choice of their operational temperature is discussed as well. Mon, 2014-12-01 14:00 From the beginning to the second generation of gravitational wave detectorsfrom David Shoemaker for the GWA 2014 Conference A brief history of gravitational wave detection using laser interferometers will be given, followed by a status report on one example of the second generation of detectors, Advanced LIGO. Tue, 2014-11-25 16:00 (SR 5, Helmholtzweg 4) Dark energy and the uniqueness of general relativityProf. Matthias Bartelmann Ruprecht-Karls-Universität Heidelberg Thu, 2014-11-20 14:15 Hamiltonian approach to QCD in Coulomb gauge: From the vacuum to finite temperaturesProf. Dr. Hugo Reinhardt, Universität Tübingen Wed, 2014-11-19 16:15 (HS 2, Abbeanum) Lightfront quantisation and strong field QEDGreger Torgrimsson (Chalmers) Fri, 2014-11-14 16:00 (HS 2, Abbeanum) Ab Initio Simulationen zur Struktur und Dynamik warmer dichter AluminiumplasmenHannes Rüter, MSc, Universität Rostock Thu, 2014-11-13 14:15 Non-Equilibrium Dynamics of a Holographic SuperfluidAndreas Samberg, Ruprecht-Karls-Universität Heidelberg Thu, 2014-11-06 14:15 Can effects of quantum gravity be observed in the CMB?Prof. Claus Kiefer, University Cologne Tue, 2014-11-04 16:15 (SR 5, Helmholtzweg 4) Supersymmetric Yang Mills TheoriesDr. Georg Bergner, Universität Bern Tue, 2014-10-28 16:15 (SR 5, Helmholtzweg 4) Coupling constant metamorphosis and conformally covariant Laplacians Dr. Jonathan Kress (University of New South Wales, Sydney)

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