Areas of Research

Gauge Theories

• Confinement and Chiral Symmetry Breaking
• Lattice Gauge Theory
• Instantons, Monopoles, and Constituents

Quantum Field Theory in External Fields

• QED in Strong Fields
• Casimir Phenomena and Finite Temperature Field Theory
• Strong Fields as a Probe for New Physics

Nonperturbative Methods in Quantum Field Theory

• Lattice Quantum Field Theory
• Functional Renormalization Group
• Effective Actions
• Worldline Formalism, Worldline Monte-Carlo Methods

Supersymmetry, Supergravity

• Supersymmetric Field Theories on the Lattice
• Supersymmetric Renormalization Flows
• Superstring Compactifications
• N=2 Supergravity

Fermionic Systems

• Thermodynamics of Fermionic Systems
• Ultracold Fermionic Atom Gases
• Quantum Phase Transitions in Fermionic Systems

Selected Topics

• Two Dimensional Gravity, Hawking Radiation
• Asymptotic Safety in Particle Physics and Gravity

Part of the work is done in collaboration with groups in Durham, Graz, Hamburg, Heidelberg, La Plata, Moscow, Paris, Plymouth, Regensburg, Storrs, Tsukuba, Utrecht and Zaragoza.