1.12.11 17:15

Extracting Real-Time Quantities from Euclidean Field Theory

Harvey Meyer

In the context of Quantum Chromodynamics, non-perturbative observables
such as the low-lying spectrum of hadrons can be extracted from the
theory discretized on a Euclidean space-time lattice and simulated on
a computer. Real-time quantities on the other hand, such as phase
shifts, time-like form factors, or transport properties at finite
temperature, cannot be straightforwardly computed. In some cases
however real-time effects leave signatures in the Euclidean theory
which can be isolated in certain kinematical regimes. I describe several examples of this type at zero and finite-temperature.

Kategorie: Kolloquium