{"created":"2023-07-27T06:25:24.552549+00:00","id":8693,"links":{},"metadata":{"_buckets":{"deposit":"97814f8f-a8b5-4e81-9140-b2bbc3827827"},"_deposit":{"created_by":3,"id":"8693","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"8693"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00008693","sets":["934:935:936"]},"author_link":["10640","10639","459"],"item_4_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-10-06","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageStart":"41107","bibliographicVolumeNumber":"80","bibliographic_titles":[{"bibliographic_title":"Physical Review E - Statistical, Nonlinear, and Soft Matter Physics"}]}]},"item_4_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Gravity-dominated systems have a negative specific heat. We investigate the negative specific heat of self-gravitating systems enclosed in a spherical container with reflecting walls by means of N -body simulations. To simulate nonequilibrium processes, a particle reflected at a nonadiabatic wall is cooled to mimic energy loss by reflecting walls, while an adiabatic wall is employed for microcanonical ensembles. We show that a negative specific heat occurs not only in the microcanonical ensemble but also in certain nonequilibrium processes with the nonadiabatic wall. With increasing cooling rates, the dependence of temperature T on energy ε, i.e., the ε- T curve, gradually deviates from the microcanonical ensemble and approaches a certain common curve at a low-energy region. The common curve agrees with an ε- T curve for stellar polytropes, especially for the polytrope index of n∼5. We show that the stellar polytrope should be related to the present nonequilibrium process appearing in the self-gravitating system with the nonadiabatic wall. In the nonequilibrium process, a rapid change in velocity at the nonadiabatic wall significantly affects the velocity and density profiles. In particular, the greater the cooling rate, the greater the local velocity gradient at a low-energy region. © 2009 The American Physical Society.","subitem_description_type":"Abstract"}]},"item_4_description_5":{"attribute_name":"提供者所属","attribute_value_mlt":[{"subitem_description":"金沢大学理工研究域機械工学系","subitem_description_type":"Other"},{"subitem_description":"金沢大学環日本海域環境研究センターエコテクノロジー研究部門","subitem_description_type":"Other"}]},"item_4_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Physical Society"}]},"item_4_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1103/PhysRevE.80.041107","subitem_relation_type_select":"DOI"}}]},"item_4_source_id_11":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AA11558033","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1539-3755","subitem_source_identifier_type":"ISSN"}]},"item_4_version_type_25":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Komatsu, Nobuyoshi"}],"nameIdentifiers":[{},{},{},{}]},{"creatorNames":[{"creatorName":"Kimura, Shigeo"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"Kiwata, Takahiro"}],"nameIdentifiers":[{},{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-10-03"}],"displaytype":"detail","filename":"TE-PR-KOMATSU-N-41107.pdf","filesize":[{"value":"897.2 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"TE-PR-KOMATSU-N-41107.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/8693/files/TE-PR-KOMATSU-N-41107.pdf"},"version_id":"694e637f-75ab-4204-855c-534ebada642d"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Negative specific heat in self-gravitating N -body systems enclosed in a spherical container with reflecting walls","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Negative specific heat in self-gravitating N -body systems enclosed in a spherical container with reflecting walls"}]},"item_type_id":"4","owner":"3","path":["936"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-10-03"},"publish_date":"2017-10-03","publish_status":"0","recid":"8693","relation_version_is_last":true,"title":["Negative specific heat in self-gravitating N -body systems enclosed in a spherical container with reflecting walls"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-07-28T02:05:23.694675+00:00"}