Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Euclidean correlators at imaginary spatial momentum in thermal QCD

Aug 9, 2022, 5:10 PM
20m
CP1-HSZ/Ground-0.011 - HS1 (CP1-HSZ)

CP1-HSZ/Ground-0.011 - HS1

CP1-HSZ

450
Oral Presentation QCD at Non-zero Temperature Non-zero Temperature

Speaker

Csaba Török (Johannes Gutenberg Universität Mainz)

Description

The thermal photon emission rate is determined by the spatially transverse, in-medium spectral function of the electromagnetic current. Accessing the spectral function using Euclidean data is, however, a challenging problem due to the ill-posed nature of inverting the Laplace transform. In this contribution, we present the first results about testing the proposal of directly computing the analytic continuation of the retarded correlator at fixed, vanishing virtuality of the photon via the calculation of the appropriate Euclidean correlator at imaginary spatial momentum. We employ two-flavors of dynamical Wilson fermions at a temperature of 250 MeV.

Primary author

Csaba Török (Johannes Gutenberg Universität Mainz)

Co-authors

Harvey B. Meyer (Johannes Gutenberg University Mainz) Tim Harris (University of Edinburgh) Marco Cè (AEC and ITP, Universität Bern) Ardit Krasniqi

Presentation materials