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arXiv · 1705.00755

Photon production spectrum above $T_c$ with a lattice quark propagator

Taekwang Kim·Masayuki Asakawa·Masakiyo Kitazawa
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Abstract

The photon production rate from the deconfined medium is analyzed with the photon self-energy constructed from the quark propagator obtained by the numerical simulation on the quenched lattice for two values of temperature, $T=1.5T_{\rm c}$ and $3T_{\rm c}$, above the critical temperature $T_{\rm c}$. The photon self-energy is calculated by the Schwinger-Dyson equation with the lattice quark propagator and a vertex function determined so as to satisfy the Ward-Takahashi identity. The obtained photon production rate exhibits a similar behavior as the perturbative results at the energy of photons larger than $0.5$~GeV.

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Taekwang Kim, Masayuki Asakawa, Masakiyo Kitazawa. 2017-05-02. Photon production spectrum above $T_c$ with a lattice quark propagator. https://arxiv.org/abs/1705.00755

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