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Path integral Monte Carlo calculation of momentum distribution in solid He-4
dc.contributor.author | Rota, Riccardo |
dc.contributor.author | Boronat Medico, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2011-09-14T13:03:00Z |
dc.date.available | 2011-09-14T13:03:00Z |
dc.date.created | 2011-02 |
dc.date.issued | 2011-02 |
dc.identifier.citation | Rota, R.; Boronat, J. Path integral Monte Carlo calculation of momentum distribution in solid He-4. "Journal of low temperature physics", Febrer 2011, vol. 162, núm. 3-4, p. 146-153. |
dc.identifier.issn | 0022-2291 |
dc.identifier.uri | http://hdl.handle.net/2117/13196 |
dc.description.abstract | We perform calculations of the momentum distribution n(k) in solid 4He by means of path integral Monte Carlo methods.We see that, in perfect crystals, n(k)does not depend on temperature T and that is different from the classical Gaussian shape of the Maxwell-Boltzmann distribution, even though these discrepancies decrease when the density of the system increases. In crystals presenting vacancies, we see that for T ≥ 0.75 K, n(k) presents the same behavior as in the perfect crystal, but, at lower T , it presents a peak when k→0. |
dc.format.extent | 8 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Aplicacions informàtiques a la física i l‘enginyeria |
dc.subject | Àrees temàtiques de la UPC::Física::Física de l'estat sòlid |
dc.subject.lcsh | Supersolids |
dc.subject.lcsh | Bose-Einstein condensation |
dc.subject.lcsh | Path integral Monte Carlo |
dc.subject.lcsh | Momentum distribution |
dc.title | Path integral Monte Carlo calculation of momentum distribution in solid He-4 |
dc.type | Article |
dc.subject.lemac | Supersòlids |
dc.contributor.group | Universitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity |
dc.identifier.doi | 10.1007/s10909-010-0249-5 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 5414302 |
dc.description.version | Postprint (author’s final draft) |
local.citation.author | Rota, R.; Boronat, J. |
local.citation.publicationName | Journal of low temperature physics |
local.citation.volume | 162 |
local.citation.number | 3-4 |
local.citation.startingPage | 146 |
local.citation.endingPage | 153 |
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