Lattice constraints on the thermal photon rate
Lattice constraints on the thermal photon rate
We estimate the photon production rate from an SU(3) plasma at temperatures of about $1.1{T}_{\mathrm{c}}$ and $1.3{T}_{\mathrm{c}}$. Lattice results for the vector current correlator at spatial momenta $k\ensuremath{\sim}(2\ensuremath{-}6)T$ are extrapolated to the continuum limit and analyzed with the help of a polynomial interpolation for the corresponding spectral function, which vanishes …