Projected d -wave superconducting state: A fermionic projected entangled pair state study

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

We investigate the physics of projected d-wave pairing states using their fermionic projected entangled pair state (fPEPS) representation. First, we approximate a d-wave Bardeen-Cooper-Schrieffer state using the Gaussian fPEPS. Next, we translate the resulting state into fPEPS tensors and implement the Gutzwiller projection which removes double occupancy by modifying the local tensor elements. The tensor network representation of the projected d-wave pairing state allows us to evaluate physical quantities in the thermodynamic limit without employing the Gutzwiller approximation. Despite having very few variational parameters, such physically motivated tensor network states are shown to exhibit competitive energies for the doped t-J model. We expect that such construction offers useful initial states and guidance for variational tensor network calculations.

Details

Original languageEnglish
Article number125128
JournalPhysical Review B
Volume107
Issue number12
Publication statusPublished - 13 Mar 2023
Peer-reviewedYes

External IDs

Mendeley d4364b06-7bb9-3dc7-a0f0-ddcca8ed4452
Scopus 85150903917
WOS 000955014300007

Keywords

Keywords

  • Variational monte-carlo, Physics, Model

Library keywords