The S0(0) Roton Structure in Highly Compressed Hydrogen (Articolo in rivista)

Type
Label
  • The S0(0) Roton Structure in Highly Compressed Hydrogen (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10909-005-5488-5 (literal)
Alternative label
  • Ulivi L. (1,2); Grazzi F. (1,2); Moraldi M. (2,3); (2005)
    The S0(0) Roton Structure in Highly Compressed Hydrogen
    in Journal of low temperature physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ulivi L. (1,2); Grazzi F. (1,2); Moraldi M. (2,3); (literal)
Pagina inizio
  • 773 (literal)
Pagina fine
  • 782 (literal)
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  • 139 (literal)
Rivista
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  • fasc. (5-6). Springer. (literal)
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  • 10 (literal)
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  • 5-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Istituto dei Sistemi Complessi, CNR, via della Madonna del piano, I 50019 Sesto Fiorentino, Italy 2) INFM, Unità di Firenze, via Giovanni Sansone 1, I 50019 Sesto Fiorentino, Italy 3) Dipartimento di Fisica, Università di Firenze, via G. Sansone 1, I 50019 Sesto Fiorentino, Italy (literal)
Titolo
  • The S0(0) Roton Structure in Highly Compressed Hydrogen (literal)
Abstract
  • By the application of quantum mechanical perturbation theory, a calculation of the S0(0) roton frequencies in hcp para-hydrogen is performed. Expressions for the second and third order term of the perturbative series have been derived, and their contribution included in the calculation. Calculations using literature anisotropic interaction potentials are presented, and the dependence of the frequencies on the different anisotropic potential terms is analyzed. The perturbative series is found to be convergent, and the third order terms to remain very small, up to very high density. In particular, it is shown that the calculated average frequency overestimate the experimental ones if this is calculated on the basis of gas phase potentials. The possibility of reproducing quantitatively the experimental data is discussed. (literal)
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