Lattice constraints on the thermal photon rate

Ghiglieri J, Kaczmarek O, Laine M, Meyer F (2016)
PHYSICAL REVIEW D 94(1): 016005.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We estimate the photon production rate from an SU(3) plasma at temperatures of about 1.1T(c) and 1.3T(c). Lattice results for the vector current correlator at spatial momenta k similar to(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-to-leading-order ( NLO) weak-coupling result, hydrodynamics, and a holographic model. At vanishing invariant mass we extract the photon rate which for k greater than or similar to 3T is found to be close to the NLO weak-coupling prediction. For k less than or similar to 2T uncertainties remain large but the photon rate is likely to fall below the NLO prediction, in accordance with the onset of a strongly interacting behavior characteristic of the hydrodynamic regime.
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Zeitschriftentitel
PHYSICAL REVIEW D
Band
94
Zeitschriftennummer
1
Artikelnummer
016005
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Ghiglieri J, Kaczmarek O, Laine M, Meyer F. Lattice constraints on the thermal photon rate. PHYSICAL REVIEW D. 2016;94(1): 016005.
Ghiglieri, J., Kaczmarek, O., Laine, M., & Meyer, F. (2016). Lattice constraints on the thermal photon rate. PHYSICAL REVIEW D, 94(1), 016005. doi:10.1103/PhysRevD.94.016005
Ghiglieri, J., Kaczmarek, O., Laine, M., and Meyer, F. (2016). Lattice constraints on the thermal photon rate. PHYSICAL REVIEW D 94:016005.
Ghiglieri, J., et al., 2016. Lattice constraints on the thermal photon rate. PHYSICAL REVIEW D, 94(1): 016005.
J. Ghiglieri, et al., “Lattice constraints on the thermal photon rate”, PHYSICAL REVIEW D, vol. 94, 2016, : 016005.
Ghiglieri, J., Kaczmarek, O., Laine, M., Meyer, F.: Lattice constraints on the thermal photon rate. PHYSICAL REVIEW D. 94, : 016005 (2016).
Ghiglieri, J., Kaczmarek, Olaf, Laine, Mikko, and Meyer, Florian. “Lattice constraints on the thermal photon rate”. PHYSICAL REVIEW D 94.1 (2016): 016005.

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arXiv: 1604.07544

Inspire: 1452561

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