Theoretical aspects of photon production in high energy nuclear collisions

TL;DR

This paper reviews the theoretical calculations of photon and dilepton production rates in quark-gluon plasma, including leading order, NLO, non-equilibrium effects, and challenges in lattice computations.

Contribution

It provides a comprehensive overview of current theoretical methods and recent advancements in calculating electromagnetic emission rates in high-energy nuclear collisions.

Findings

Summarizes leading order and NLO photon production rates

Discusses non-equilibrium correction effects

Highlights challenges in non-perturbative lattice calculations

Abstract

A brief overview of the calculation of photon and dilepton production rates in a deconfined quark-gluon plasma is presented. We review leading order rates as well as recent NLO determinations and non-equilibrium corrections. Furthermore, the difficulties in a non-perturbative lattice determination are summarized.