Pregled bibliografske jedinice broj: 255289
Quantum Monte Carlo study of overpressurised liquid 4He at zero temperature
Quantum Monte Carlo study of overpressurised liquid 4He at zero temperature // International Journal of Modern Physics B, 20 (2006), 30-31; 5154-5163 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 255289 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Quantum Monte Carlo study of overpressurised liquid 4He at zero temperature
Autori
Vranješ Markić, Leandra ; Boronat, Jordi ; Cassuleras, Joaquim ; Cazorla, Claudio
Izvornik
International Journal of Modern Physics B (0217-9792) 20
(2006), 30-31;
5154-5163
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
he-4; excitations; superfluid helium; roton; Monte Carlo
Sažetak
We present a diffusion Monte Carlo simulation of metastable superfluid 4He at zero temperature and pressures beyond freezing (~ 25 bar) up to 275 bar. The equation of state of liquid 4He is extended to the overpressurized regime, where the pressure dependence of the static structure factor and the condensate fraction is obtained. Along this large pressure range, excited-state energy corresponding to the roton has been determined using the release-node technique. Our results show that both the roton energies and the condensate fraction decrease with increasing pressure but do not become zero. We compare our calculations to recent experimental data in overpressurized regime.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
0177164
Ustanove:
Prirodoslovno-matematički fakultet, Split
Profili:
Leandra Vranješ Markić
(autor)
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
Uključenost u ostale bibliografske baze podataka::
- The INSPEC Science Abstracts series
- Mathematical Reviews
