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Open Quantum Systems Decoherence Quantum Simulation

Self-Consistent Effective Hamiltonian Theory for Fermionic Many Body Systems

arXiv

Authors: Xindong Wang, Hai-Ping Cheng

Year

2019

Paper ID

15250

Status

Preprint

Abstract Read

~2 min

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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.

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Using a separable many-body variational wavefunction, we formulate a self-consistent effective Hamiltonian theory for fermionic many-body system.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1910.12136 [2] arXiv https://arxiv.org/abs/1910.12136 [3] Publisher https://arxiv.org/abs/1910.12136

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