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Titolo:
MOMENTUM DISTRIBUTION OF LIQUID-HELIUM
Autore:
SENATORE G; MORONI S; FANTONI S;
Indirizzi:
UNIV TRIESTE,DIPARTIMENTO FIS TEOR,STRADA COSTIERA 11 I-34014 TRIESTEITALY INFM I-34014 TRIESTE ITALY INT CTR THEORET PHYS I-34014 TRIESTE ITALY
Titolo Testata:
Czechoslovak journal of Physics
, volume: 46, anno: 1996, supplemento:, 1
pagine: 279 - 280
SICI:
0011-4626(1996)46:<279:MDOL>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
HE-3;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
G. Senatore et al., "MOMENTUM DISTRIBUTION OF LIQUID-HELIUM", Czechoslovak journal of Physics, 46, 1996, pp. 279-280

Abstract

We have obtained the one-body density matrix and the momentum distribution of liquid lie at T = 0 from Diffusion Monte Carlo simulations, using trial functions optimized via the Euler Monte Carlo (EMC) method. For He-4 we find a condensate fraction smaller than in previous calculations. For He-3, which we have studied within the fixed-node approximation, we analyze the momentum distribution around the Fermi surface. We also show that an approximate factorization of the one-body density matrix rho(r) similar or equal to rho(u)(r)rho(B)(r) holds, with rho(u)(r) and rho(B)(r) respectively the density matrix for the ideal (uncorrelated) Fermi gas and the density matrix of a mass 3 Bose system.

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Documento generato il 05/12/20 alle ore 20:13:59