TY  - JOUR
A1  - Satow, Daisuke
A1  - Gubler, Philipp
T1  - Exact sum rules for vector channel at finite temperature and their application to lattice QCD analysis
T2  - EPJ Web of Conferences
N2  - We derive three exact sum rules for the spectral function of the electromagnetic current with zero spatial momentum at finite temperature. Possible applications of the three sum rules to lattice computations of the spectral function and transport coefficients are also discussed: We propose an ansatz for the spectral function that can be applied to all three sum rules and fit it to available lattice data of the Euclidean vector correlator above the critical temperature. As a result, we obtain estimates for both the electrical conductivity σ and the second order transport coefficient τJ.
Y1  - 2017
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/71595
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-715953
SN  - 2100-014X
VL  - 137
IS  - 07022
PB  - EDP Sciences
CY  - Les Ulis
ER  -