Pregled bibliografske jedinice broj: 210651
Quantum Monte Carlo Simulation of Overpressurized Liquid 4He
Quantum Monte Carlo Simulation of Overpressurized Liquid 4He // Physical review letters, 95 (2005), 14; 145302-1 doi:10.1103/PhysRevLett.95.145302 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 210651 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Quantum Monte Carlo Simulation of Overpressurized Liquid 4He
Autori
Vranješ, Leandra ; Boronat, Jordi ; Casulleras, Joaquim ; Cazorla, Claudio
Izvornik
Physical review letters (0031-9007) 95
(2005), 14;
145302-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Helium ; superfluid ; roton ; condensate fraction
Sažetak
A diffusion Monte Carlo simulation of superfluid 4He at zero temperature and pressures up to 275 bar is presented. Increasing the pressure beyond freezing (~25 bar), the liquid enters the overpressurized phase in a metastable state. In this regime, we report results of the equation of state and the pressure dependence of the static structure factor, the condensate fraction, and the excited-state energy corresponding to the roton. Along this large pressure range, both the condensate fraction and the roton energy decrease but do not become zero. The roton energies obtained are compared with recent experimental data in the overpressurized regime.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
