28 citations · 41 across the 2 of their papers we have counts for
2 papers
math-ph2002★ 28 cited
KMS, etc
L. Birke, J. Froehlich
A general form of the ``Wick rotation'', starting from imaginary-time Green functions of quantum-mechanical systems in thermal equilibrium at positive temperature, is established.…
hep-th1999★ 13 cited
Symmetry breaking boundary conditions and WZW orbifolds
L. Birke, J. Fuchs, C. Schweigert
Symmetry breaking boundary conditions for WZW theories are discussed. We derive explicit formulae for the reflection coefficients in the presence of boundary conditions that preser…