Diquark Condensation in Dense Matter - A Lattice Perspective

TL;DR

This paper reviews lattice field theory studies of diquark condensation, highlighting evidence for superfluidity in dense quark matter models, and compares behaviors across different quark representations.

Contribution

It provides a comparative analysis of diquark condensation in lattice models, emphasizing evidence for superfluidity and exploring different quark representations.

Findings

Evidence of superfluidity at high density in lattice models

Contrasts behaviors of fundamental and adjoint quarks in SU(2)

Supports the role of diquark pairing in color superconductivity

Abstract

We review efforts to study, using the methods of lattice field theory, the phenomenon of diquark condensation via BCS pairing at a Fermi surface, which has been proposed as a mechanism for color superconductivity in dense quark matter. The particular models studied are the Gross-Neveu model and SU(2) lattice gauge theory; in both cases evidence for superfluidity at high density is presented. The behaviour expected for quarks in both fundamental and adjoint representations of SU(2) is contrasted.