# Thermal Schwinger pair production at arbitrary coupling

## TL;DR

This paper develops a method to calculate the rate of thermal Schwinger pair production at any coupling strength, accounting for all orders of virtual photon exchange, regardless of particle properties.

## Contribution

It introduces a worldline formalism approach to compute the pair production rate beyond weak coupling perturbation theory, valid for various particle types.

## Key findings

- Calculated the logarithm of the pair production rate to all orders in virtual photon exchange.
- Extended the theoretical framework to arbitrary coupling strengths.
- Provided a general method applicable to different particle spins and charges.

## Abstract

We calculate the rate of thermal Schwinger pair production at arbitrary coupling in weak external fields. Our calculations are valid independently of many properties of the charged particles produced, in particular their spin and whether they are electric or magnetic. Using the worldline formalism, we calculate the logarithm of the rate to leading order in the weak external field and to all orders in virtual photon exchange, taking us beyond the perturbative expansion about the leading order, weak coupling result.