3 papers
hep-ph2004
There is no local chiral perturbation theory at finite temperature
Stefan Leupold
For a low-temperature expansion in QCD it is well-known that the Lagrangian of vacuum chiral perturbation theory can be applied. This is due to the fact that the thermal effects of…
hep-th2003
Gauge covariant heat kernel expansion at finite temperature
Stefan Leupold
The heat kernel method is extended to the case of finite temperature. Special emphasis is given to the study of gauge theories. Due to the compactness of space in the Euclidean tim…
nucl-th2002
Spectral Functions of Quarks in Quark Matter
Frank Froemel, Stefan Leupold, Ulrich Mosel
We present a simple albeit self-consistent approach to the spectral function of light quarks in infinite quark matter. Relations between correlation functions and collision rates a…