Open AccessQuantum Monte Carlo Study of Weyl Superconductivity
Author(s) -
Peter Rosenberg,
Efstratios Manousakis
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2241/1/012001
Subject(s) - pairing , physics , quasiparticle , quantum monte carlo , singlet state , spin (aerodynamics) , superconductivity , hubbard model , condensed matter physics , monte carlo method , quantum mechanics , fermi surface , mathematics , statistics , thermodynamics , excited state
Using auxiliary-field quantum Monte Carlo we study superconductivity in a simple extension of the two-dimensional negative- U Hubbard model which hosts Weyl nodes near the Fermi surface. We discuss the model and our method as applied to the study of superconductivity in this system. We discuss the nature of pairing between Weyl quasiparticles which carry opposite spin and opposite topological charge leading to a spin-singlet pairing amplitude and to a mixture of pseudo-spin singlet and pseudo-spin triplet pairing.