# Properties of QCD vacuum from lattice

## TL;DR

This paper investigates the properties of the QCD vacuum using lattice simulations, focusing on vortex condensation, monopole condensation related to confinement, instanton topology, and gauge-invariant correlators across phase transitions.

## Contribution

It introduces a disorder parameter for vortex condensation and tests it through numerical simulations, advancing understanding of QCD vacuum structure.

## Key findings

- Vortex condensation signals were successfully identified.
- Monopole condensation is linked to confinement mechanisms.
- Gauge-invariant correlators change across the deconfining transition.

## Abstract

A disorder parameter is constructed which signals the condensation of vortices. The construction is tested by numerical simulations. Advances in the understanding of the basic properties of QCD vacuum will be reported. Three main subjects will be touched: 1) Condensation of monopoles and confinement. 2) Topology, or instanton physics. 3) Gauge invariant field strength correlators, and their behaviour across the deconfining phase transition.