dorsal/arxiv
View SchemaFermionic Squeezed State for Simple Algebraic Models in Many-Fermion Systems
| Authors | H. Akaike, Y. Tsue, S. Nishiyama |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0401019 |
| URL | https://arxiv.org/abs/nucl-th/0401019 |
| DOI | 10.1143/PTP.112.583 |
Abstract
It is shown that a variational approach with fermionic squeezed states to many-fermion systems such as pairing model is one of useful methods beyond the usual Hartree-Fock-Bogoliubov approximation. A pairing-type quasi-spin squeezed state is constructed and adopted as a trial state in the variational method. By using this state, quantum fluctuations are taken into account. In pairing model, dynamical and static approaches are discussed in the context of comparing with the Hartree-Fock-Bogoliubov approximation about ground state energy. As a possible extension to the O(4) model, prospective squeezed states are investigated and the usefulness is discussed.
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"date_created": "2026-03-02T18:00:00.335000Z",
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"abstract": "It is shown that a variational approach with fermionic squeezed states to\nmany-fermion systems such as pairing model is one of useful methods beyond the\nusual Hartree-Fock-Bogoliubov approximation. A pairing-type quasi-spin squeezed\nstate is constructed and adopted as a trial state in the variational method. By\nusing this state, quantum fluctuations are taken into account. In pairing\nmodel, dynamical and static approaches are discussed in the context of\ncomparing with the Hartree-Fock-Bogoliubov approximation about ground state\nenergy. As a possible extension to the O(4) model, prospective squeezed states\nare investigated and the usefulness is discussed.",
"arxiv_id": "nucl-th/0401019",
"authors": [
"H. Akaike",
"Y. Tsue",
"S. Nishiyama"
],
"categories": [
"nucl-th"
],
"doi": "10.1143/PTP.112.583",
"title": "Fermionic Squeezed State for Simple Algebraic Models in Many-Fermion Systems",
"url": "https://arxiv.org/abs/nucl-th/0401019"
},
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