# Transport anomalies near the QCD phase transition at finite density

## TL;DR

This paper investigates how transport properties like pressure-pressure and current-current correlators diverge near the QCD phase transition at finite density, leading to increased soft photon production.

## Contribution

It reveals the divergence of correlators at $T_c$ due to diquark fluctuations and links this to enhanced soft photon emission near the transition.

## Key findings

- Correlators diverge at $T_c$ due to diquark fluctuations.
- Soft photon production rate increases significantly near $T_c$.
- Transport anomalies are linked to critical fluctuations at the phase transition.

## Abstract

We show that at finite density pressure-pressure and current-current correlators exhibit divergences at $T_c$ owing to the fluctuations of the diquark field. Specifically, this leads to a significant excess of the soft photon production rate near $T_c$.