Logarithmic Singularity of Specific Heat in Liquid Helium II at the λ Point

Sasaki, Shosuke

doi:info:doi/10.1007/s10909-007-9355-4

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タイトル	Logarithmic Singularity of Specific Heat in Liquid Helium II at the λ Point
著者	Sasaki, Shosuke Sasaki, Shosuke
抄録	The experimental width of the second sound peak in Brillouin scattering is less than the instrumental width. It is also less than the width of the first sound peak near the λ point. The theoretical width of the second sound peak becomes infinitely large at the λ point in the traditional viewpoint. This discrepancy suggests that the second sound peak detected in Brillouin scattering is an elementary excitation. We calculate the specific heat of liquid helium near the λ point by considering the second sound peak. The calculated temperature-dependence of the specific heat has a logarithmic divergence at the λ point. Furthermore, the calculated values of the specific heat agree well with data derived from experiments.
公開者	Springer
掲載誌名	Journal of Low Temperature Physics
巻	148
号	3-4
開始ページ	97
終了ページ	102
刊行年月	2007-08
ISSN	00222291
DOI	info:doi/10.1007/s10909-007-9355-4
URL	http://hdl.handle.net/11094/27203
言語	英語

著者版フラグ	author
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Low Temperature Physics.148(3-4) P.97-P.102
DC.title	Logarithmic Singularity of Specific Heat in Liquid Helium II at the λ Point
DC.creator	Sasaki, Shosuke
DC.publisher	Springer
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2007-08
DC.identifier	info:doi/10.1007/s10909-007-9355-4
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/27203
DCTERMS.abstract	The experimental width of the second sound peak in Brillouin scattering is less than the instrumental width. It is also less than the width of the first sound peak near the λ point. The theoretical width of the second sound peak becomes infinitely large at the λ point in the traditional viewpoint. This discrepancy suggests that the second sound peak detected in Brillouin scattering is an elementary excitation. We calculate the specific heat of liquid helium near the λ point by considering the second sound peak. The calculated temperature-dependence of the specific heat has a logarithmic divergence at the λ point. Furthermore, the calculated values of the specific heat agree well with data derived from experiments.
citation_title	Logarithmic Singularity of Specific Heat in Liquid Helium II at the λ Point
citation_author	Sasaki, Shosuke
citation_publisher	Springer
citation_language	英語
citation_date	2007-08
citation_journal_title	Journal of Low Temperature Physics
citation_volume	148
citation_issue	3-4
citation_firstpage	97
citation_lastpage	102
citation_issn	00222291
citation_doi	info:doi/10.1007/s10909-007-9355-4
citation_public_url	http://hdl.handle.net/11094/27203

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