Staggered-vorticity correlations in a lightly doped t-J model: a variational approach

TL;DR

This paper investigates staggered vorticity correlations in a lightly doped t-J model using a variational approach, revealing insights into hole pairing and circulating currents related to SU(2) symmetry.

Contribution

It introduces a variational Monte Carlo analysis of vorticity correlations, connecting them to SU(2) symmetry and hole pairing mechanisms in the t-J model.

Findings

Staggered vorticity correlations are observed in the variational wave function.

Pairs of holes circulate in opposite directions, indicating pairing behavior.

Correlations are explained through SU(2) symmetry between d-wave and staggered-flux phases.

Abstract

We report staggered vorticity correlations of current in the d-wave variational wave function for the lightly-doped t-J model. Such correlations are explained from the SU(2) symmetry relating d-wave and staggered-flux mean-field phases. The correlation functions computed by the variational Monte Carlo method suggest that pairs are formed of holes circulating in opposite directions.