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

Euclidean correlators at imaginary spatial momentum in thermal QCD

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

CP1-HSZ/Ground-0.011 - HS1


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


Csaba Török (Johannes Gutenberg Universität Mainz)


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)


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

Presentation materials