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Titolo:
The coherent-state wave function for solid He-3
Autore:
Ciftja, O; Moroni, S; Fantoni, S;
Indirizzi:
Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 t Phys, College Stn, TX 77843 USA Int Sch Adv Studies, Trieste, Italy Int Sch Adv Studies Trieste ItalyInt Sch Adv Studies, Trieste, Italy Abdus Salam Int Ctr Theoret Phys, Trieste, Italy Abdus Salam Int Ctr Theoret Phys Trieste Italy ret Phys, Trieste, Italy
Titolo Testata:
JOURNAL OF PHYSICS-CONDENSED MATTER
fascicolo: 5, volume: 13, anno: 2001,
pagine: 1041 - 1050
SICI:
0953-8984(20010205)13:5<1041:TCWFFS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONTE-CARLO CALCULATIONS; SPIN-DEPENDENT CORRELATIONS; LIQUID-HE-3; SYSTEMS; FERMION; HELIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ciftja, O Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 llege Stn, TX 77843 USA
Citazione:
O. Ciftja et al., "The coherent-state wave function for solid He-3", J PHYS-COND, 13(5), 2001, pp. 1041-1050

Abstract

A new class of variational wave functions describing many-body systems with spin-dependent correlations is used to study solid He-3. The idea of spincoherent states is used to construct a variational coherent-state wave function for solid He-3 as an antisymmetrized Jastrow-Nosanow wave function that also contains spin-dependent correlations. We investigate this wave function by a variational Monte Carlo method. The addition of triplet (three-body) correlations produces a ground-state energy per particle that is a considerable improvement upon other variational results, but still appreciable discrepancies with the experiment remain. We speculate that such discrepancies point to a non-negligible effect of more-than-three-body correlations for both liquid and solid He-3.

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Documento generato il 29/11/20 alle ore 00:55:52