Lattice constraints on the thermal photon rate

@article{Ghiglieri2016LatticeCO,
  title={Lattice constraints on the thermal photon rate},
  author={Jacopo Ghiglieri and O. Kaczmarek and Mikko Laine and Florian Meyer},
  journal={Physical Review D},
  year={2016},
  volume={94},
  pages={016005}
}
We estimate the photon production rate from an SU(3) plasma at temperatures of about 1.1Tc and 1.3Tc. Lattice results for the vector current correlator at spatial momenta k∼(2−6)T are extrapolated to the continuum limit and analyzed with the help of a polynomial interpolation for the corresponding spectral function, which vanishes at zero frequency and matches to high-precision perturbative results at large invariant masses. For small invariant masses the interpolation is compared with the next… 

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