Self-consistent effective Hamiltonian theory for fermionic many-body systems

DOI10.1142/S0217979221500193zbMATH Open1455.81051arXiv1910.12136MaRDI QIDQ4965688

Hai-Ping Cheng, Xindong Wang

Publication date: 9 March 2021

Published in: International Journal of Modern Physics B (Search for Journal in Brave)

Abstract: Using a separable many-body variational wavefunction, we formulate a self-consistent effective Hamiltonian theory for fermionic many-body system. The theory is applied to the two-dimensional Hubbard model as an example to demonstrate its capability and computational effectiveness. Most remarkably for the Hubbard model in 2-d, a highly unconventional quadruple-fermion non-Cooper-pair order parameter is discovered.

Full work available at URL: https://arxiv.org/abs/1910.12136

zbMATH Keywords

effective Hamiltonianvariational wavefunctionmany-body fermions

Mathematics Subject Classification ID

Many-body theory; quantum Hall effect (81V70) Fermionic systems in quantum theory (81V74)

Related Items (5)

Effective dynamics of interacting fermions from semiclassical theory to the random phase approximation ⋮ Title not available (Why is that?) ⋮ Optimizing strongly interacting fermionic Hamiltonians ⋮ Title not available (Why is that?) ⋮ Title not available (Why is that?)

This page was built for publication: Self-consistent effective Hamiltonian theory for fermionic many-body systems

Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q4965688)