# On microscopic structure of the QCD vacuum

## TL;DR

This paper introduces a new class of stable, axially symmetric monopole-antimonopole solutions in pure QCD, suggesting their role as fundamental structures in the microscopic formation of the QCD vacuum.

## Contribution

It presents novel stationary solutions in pure QCD representing monopole-antimonopole pairs that are locally stable and could underpin the vacuum structure.

## Key findings

- Solutions are regular and stationary with axial symmetry.
- Solutions are stable against quantum gluon fluctuations.
- Potential role in QCD vacuum formation via monopole pair condensation.

## Abstract

We propose a new class of regular stationary axially symmetric solutions in a pure QCD which correspond to monopole-antimonopole pairs at macroscopic scale. The solutions represent vacuum field configurations which are locally stable against quantum gluon fluctuations in any small space-time vicinity. This implies that the monopole-antimonopole pair can serve as a structural element in microscopic description of QCD vacuum formation through the monopole pair condensation.