Baryon bag simulation of QCD in the strong coupling limit

TL;DR

This paper introduces a novel baryon bag approach for simulating strong coupling QCD, reorganizing the lattice representation to treat baryons as free fermions within bags, and demonstrates initial results in two dimensions.

Contribution

It presents a new baryon bag formulation and a worm update algorithm for simulating strong coupling QCD, enabling direct lattice simulations in this framework.

Findings

First results obtained in two dimensions

Baryon contributions are effectively isolated in bags

The worm update facilitates efficient simulation

Abstract

We explore the possibility of a simulation of strong coupling QCD in terms of so-called baryon bags. In this form the known representation in terms of monomers, dimers and baryon loops is reorganized such that the baryon contributions are collected in space time domains referred to as baryon bags. Within the bags three quarks propagate coherently as a baryon that is described by a free fermion, whereas the rest of the lattice is solely filled with interacting meson terms, i.e., quark and diquark monomers and dimers. We perform a simulation directly in the baryon bag language using a newly developed worm update and show first results in two dimensions.