The resonating valence bond wave functions in quantum antiferromagnets

TL;DR

This paper explores the versatility of projected-BCS wave functions in describing various quantum antiferromagnetic states, including spin liquids, Luttinger liquids, and dimerized states, highlighting their potential as a unifying variational approach.

Contribution

It demonstrates that projected-BCS wave functions can effectively describe multiple quantum spin states, establishing a unified framework for understanding disordered spin systems.

Findings

Projected-BCS wave functions describe spin liquids, Luttinger liquids, and dimerized states.

The wave functions serve as a flexible variational tool for quantum antiferromagnets.

A close connection between different disordered spin states is established.

Abstract

Projected-BCS wave functions have been proposed as the paradigm for the understanding of disordered spin states (spin liquids). Here we investigate the properties of these wave functions showing how Luttinger liquids, dimerized states, and gapped spin liquids may be described by the same class of wave functions, which, therefore, represent an extremely flexible variational tool. A close connection between spin liquids and