Speaker
Dr
Masakiyo Kitazawa
(Osaka University)
Description
The inverse of a Euclidean correlation function has an analytic
relation to the inverse of a corresponding retarded
propagator in real time.
We argue that this analyticy is exploited in the analysis of
real-time functions with Euclidean correlator obtained in
lattice QCD Monte Carlo simulations complementary to
the standard analysis of spectral functions.
We analyze the inverse of quark correlator obtained on the
quenched lattice, and demonstrate that the inverse correlator
contains information to constrain the form of the quark
propagator in real time in addition to the standard analysis.
For elementary fields the inverse correlator is directly
related to the imaginary part of the self-energy in real time,
which physically represents the rates of scattering processes
due to the optical theorem.
Implications of the present analysis to these microscopic
aspects of the dynamical properties are addressed.
Primary author
Dr
Masakiyo Kitazawa
(Osaka University)
Co-author
Prof.
Masayuki Asakawa
(Osaka University)
