Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Joaquim Casulleras"'
Publikováno v:
SciPost Physics, Vol 17, Iss 2, p 030 (2024)
Itinerant ferromagnetism in dilute Fermi gases is predicted to emerge at values of the gas parameter where second-order perturbation theory is not accurate enough to properly describe the system. We have revisited perturbation theory for SU(N) fermio
Externí odkaz:
https://doaj.org/article/1c8c895906b04ce6bb61f1acd3cbacd0
Publikováno v:
SciPost Physics, Vol 14, Iss 3, p 038 (2023)
We present exact analytic results for the energy of a SU(N) repulsive Fermi gas as a function of the spin-channel occupation at second order in the gas parameter. This is an extension of previous results that now incorporates the degree of polarizati
Externí odkaz:
https://doaj.org/article/0cd3a92983714c058432b1577aee269e
Publikováno v:
Journal of Low Temperature Physics. 171:436-442
The ground-state properties of spin-polarized deuterium with only one occupied nuclear spin state (D↓1) at zero temperature are studied by means of the variational Monte Carlo (VMC) method. Influence of the backflow correlations on the ground-state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db57b35e6f20de19e38975af6710957a
https://doi.org/10.1007/s10909-012-0773-6
https://doi.org/10.1007/s10909-012-0773-6
Publikováno v:
International Journal of Modern Physics B. 21:2124-2133
We present recent results from a diffusion Monte Carlo study of small 3 He drops in the limit of zero temperature. Using the same methodology than in previous calculations carried out for bulk 3 He , we have obtained accurate results for their energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1edad1b95dbdf00537cefe7a59bc28a8
https://doi.org/10.1142/s021797920704352x
https://doi.org/10.1142/s021797920704352x
Publikováno v:
International Journal of Modern Physics B. 20:5154-5163
We present a diffusion Monte Carlo simulation of metastable superfluid 4 He at zero temperature and pressures beyond freezing (~ 25 bar) up to 275 bar. The equation of state of liquid 4 He is extended to the overpressurized regime, where the pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19d0b7e156ffcc43b6e0ca4584386a02
https://doi.org/10.1142/s0217979206036211
https://doi.org/10.1142/s0217979206036211
Publikováno v:
Journal of Low Temperature Physics. 138:247-252
We present a variational Monte Carlo calculation of a small 3He cluster within the Jastrow-Feenberg-Slater wave function approach. The trial wave function incorporates, in a progressive way, higher order correlations to elucidate at a quantitative le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9b462cc672c9c9a0c170d32862fd64
https://doi.org/10.1007/s10909-005-1558-y
https://doi.org/10.1007/s10909-005-1558-y
Publikováno v:
Journal of Low Temperature Physics. 138:43-48
In recent experiments, Balibar and collaborators have been able to produce metastable superfluid $^4$He up to approximately 200 bar, a pressure much higher than the freezing point (25 bar). Interpretation of some of their experimental data requires t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a81e2a20f9a2d0486414d895ad5bb1c
https://doi.org/10.1007/s10909-005-1525-7
https://doi.org/10.1007/s10909-005-1525-7
Publikováno v:
Journal of Low Temperature Physics. 134:787-792
An exhaustive analysis of 4He clusters at T=0 using the diffusion Monte Carlo method has been carried out searching for possible shell structures. Contrary to previous microscopic calculations, we have focused our attention on a one-by-one number of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c35cdad7fbbb2762e7f3d1fbd212d67
https://doi.org/10.1023/b:jolt.0000012645.43136.f2
https://doi.org/10.1023/b:jolt.0000012645.43136.f2
Publikováno v:
Scopus-Elsevier
We utilize structural information from microscopic variational and diffusion Monte Carlo calculations for two- and three-dimensional 3He to calculate the dynamic structure function and the effective mass of 3He. Static effective interactions are cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52bf3d683d2e78ade4fa5c9c519095a3
https://doi.org/10.1023/b:jolt.0000012647.66763.13
https://doi.org/10.1023/b:jolt.0000012647.66763.13
Publikováno v:
Journal of Low Temperature Physics. 126:1547-1552
We present results of a path integral Monte Carlo (PIMC) calculation of the momentum distribution of Ne and normal 4 He at low temperatures. In the range of temperatures analyzed, consequently exchanges can be disregarded and both systems are conside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c6b00645316f26bfa145eff7630566e
https://doi.org/10.1023/a:1014255702651
https://doi.org/10.1023/a:1014255702651