6533b821fe1ef96bd127c381
RESEARCH PRODUCT
Estimation of the photon production rate using imaginary momentum correlators
Csaba TörökMarco CèTim HarrisArdit KrasniqiHarvey MeyerSamuel Ruhlsubject
Computation theoryPhotonsHigh Energy Physics - LatticeLaplace transformHigh Energy Physics - Lattice (hep-lat)Lattice theoryFOS: Physical sciencesdescription
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 on implementing 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 dynamical O(a)-improved Wilson fermions at a temperature of 250 MeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-01-01 |