# Gauge fixing, zero--momentum modes and the calculation of masses on a lattice

## TL;DR

This paper investigates how zero-momentum modes influence the calculation of masses, such as the magnetic screening mass, from gauge-dependent correlators on a lattice, highlighting their significant impact.

## Contribution

It demonstrates that zero-momentum modes can significantly alter mass measurements in lattice gauge theory calculations.

## Key findings

- Zero-momentum modes strongly affect mass values.
- Gauge-dependent correlators are sensitive to zero-momentum modes.
- Implications for accurate mass determination in lattice simulations.

## Abstract

It is shown that the zero--momentum modes can strongly affect the values of the masses, for example the magnetic screening mass $m_m$, calculated from gauge--dependent correlators with zero momentum.