Non-local regularization of chiral quark models in the soliton sector

TL;DR

This paper introduces a Lorentz invariant non-local regularization for chiral quark models that ensures proper baryon number quantization and supports soliton solutions capable of modeling nucleons.

Contribution

It presents a novel regularization scheme for chiral quark models that is Lorentz invariant and applicable at all loop orders, improving the description of baryons.

Findings

Supports stable hedgehog solitons representing nucleons

Ensures proper quantization of baryon number

Regularized at all loop orders

Abstract

A chiral quark model is described which is regularized in terms of Lorentz invariant non-local interactions. The model is regularized to all loop orders and it ensures the proper quantization of the baryon number. It sustains bound hedgehog solitons which, after suitable centre of mass corrections, can adequately describe the nucleon.