Exploring the QCD vacuum - (some) recent developments in confinement and topology

TL;DR

This paper reviews recent progress in understanding the QCD vacuum, focusing on confinement, topology, and the role of topological objects like instantons, with new insights gained through fermionic eigenmode filtering methods.

Contribution

It introduces novel filtering techniques based on fermionic eigenmodes to analyze the structure of the QCD vacuum, highlighting new connections between topology and confinement.

Findings

Instantons at finite temperature reveal complex topological structures.

Fermionic eigenmode filtering uncovers detailed vacuum configurations.

New insights into the interplay between topology and confinement in QCD.

Abstract

I start by giving a brief overview over new developments in the area of confinement and topology. As an example for the interrelations between topological objects, instantons at finite temperature are discussed. Then I focus on new insights into the structure of the QCD vacuum obtained through filtering methods, in particular those based on decompositions w.r.t. fermionic eigenmodes.