{"id":"https://openalex.org/W2593429686","doi":"https://doi.org/10.1103/physrevd.75.101502","title":"Lorentz violation and perpetual motion","display_name":"Lorentz violation and perpetual motion","publication_year":2007,"publication_date":"2007-05-18","ids":{"openalex":"https://openalex.org/W2593429686","doi":"https://doi.org/10.1103/physrevd.75.101502","mag":"2593429686"},"language":"en","primary_location":{"id":"doi:10.1103/physrevd.75.101502","doi":"https://doi.org/10.1103/physrevd.75.101502","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevd.75.101502","pdf_url":null,"source":{"id":"https://openalex.org/S4210190737","display_name":"Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields","issn_l":"0556-2821","issn":["0556-2821","1089-4918","1538-4500","1550-2368","1550-7998"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review D","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/hep-th/0702124","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046692894","display_name":"Christopher Eling","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Christopher Eling","raw_affiliation_strings":["Department of Physics, University of Maryland, College Park, Maryland, 20742, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Maryland, College Park, Maryland, 20742, USA","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044283553","display_name":"Brendan Foster","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Brendan Z. Foster","raw_affiliation_strings":["Department of Physics, University of Maryland, College Park, Maryland, 20742, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Maryland, College Park, Maryland, 20742, USA","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075366483","display_name":"Ted Jacobson A","orcid":"https://orcid.org/0000-0002-1828-1993","observed_orcids":["https://orcid.org/0000-0002-1828-1993"]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ted Jacobson","raw_affiliation_strings":["Department of Physics, University of Maryland, College Park, Maryland, 20742, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Maryland, College Park, Maryland, 20742, USA","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049240525","display_name":"Aron C. Wall","orcid":"https://orcid.org/0000-0002-6968-0425","observed_orcids":["https://orcid.org/0000-0002-6968-0425"]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Aron C. Wall","raw_affiliation_strings":["Department of Physics, University of Maryland, College Park, Maryland, 20742, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Maryland, College Park, Maryland, 20742, USA","institution_ids":["https://openalex.org/I66946132"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I66946132"],"apc_list":null,"apc_paid":null,"fwci":7.946,"has_fulltext":true,"cited_by_count":108,"citation_normalized_percentile":{"value":0.97448531,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":99},"biblio":{"volume":"75","issue":"10","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10025","display_name":"Black Holes and Theoretical Physics","score":0.5112000107765198,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10025","display_name":"Black Holes and Theoretical Physics","score":0.5112000107765198,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11415","display_name":"Noncommutative and Quantum Gravity Theories","score":0.4650999903678894,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.005799999926239252,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/lorentz-violation","display_name":"Lorentz violation","score":0.9980000257492065},{"id":"https://openalex.org/keywords/generalized-second-law","display_name":"generalized second law","score":0.7229999899864197},{"id":"https://openalex.org/keywords/black-hole-thermodynamics","display_name":"black hole thermodynamics","score":0.9819999933242798},{"id":"https://openalex.org/keywords/black-hole-entropy","display_name":"black hole entropy","score":0.9570000171661377},{"id":"https://openalex.org/keywords/energy-extraction","display_name":"energy extraction","score":0.734000027179718},{"id":"https://openalex.org/keywords/penrose-process","display_name":"Penrose process","score":0.9810000061988831},{"id":"https://openalex.org/keywords/hawking-radiation","display_name":"Hawking radiation","score":0.6589999794960022},{"id":"https://openalex.org/keywords/field-instability","display_name":"field instability","score":0.5109999775886536}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7411300539970398},{"id":"https://openalex.org/C63745668","wikidata":"https://www.wikidata.org/wiki/Q911284","display_name":"Black hole thermodynamics","level":3,"score":0.5923168063163757},{"id":"https://openalex.org/C50341732","wikidata":"https://www.wikidata.org/wiki/Q880302","display_name":"Black hole (networking)","level":5,"score":0.5870937705039978},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.5525625944137573},{"id":"https://openalex.org/C5667645","wikidata":"https://www.wikidata.org/wiki/Q217255","display_name":"Lorentz transformation","level":2,"score":0.5300730466842651},{"id":"https://openalex.org/C104062141","wikidata":"https://www.wikidata.org/wiki/Q2601295","display_name":"Extremal black hole","level":3,"score":0.5229114890098572},{"id":"https://openalex.org/C45634927","wikidata":"https://www.wikidata.org/wiki/Q616172","display_name":"Penrose process","level":5,"score":0.5077820420265198},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.5049863457679749},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.4697171747684479},{"id":"https://openalex.org/C82422596","wikidata":"https://www.wikidata.org/wiki/Q1094364","display_name":"Rotating black hole","level":3,"score":0.4679732918739319},{"id":"https://openalex.org/C144951741","wikidata":"https://www.wikidata.org/wiki/Q131468","display_name":"White hole","level":3,"score":0.4107131361961365},{"id":"https://openalex.org/C87452409","wikidata":"https://www.wikidata.org/wiki/Q740956","display_name":"Black brane","level":4,"score":0.31303882598876953},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.20851823687553406},{"id":"https://openalex.org/C155675718","wikidata":"https://www.wikidata.org/wiki/Q161254","display_name":"Angular momentum","level":2,"score":0.09759747982025146},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.0},{"id":"https://openalex.org/C104954878","wikidata":"https://www.wikidata.org/wiki/Q1648707","display_name":"Routing protocol","level":3,"score":0.0},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.0},{"id":"https://openalex.org/C89305328","wikidata":"https://www.wikidata.org/wiki/Q1755411","display_name":"Link-state routing protocol","level":4,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1103/physrevd.75.101502","doi":"https://doi.org/10.1103/physrevd.75.101502","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevd.75.101502","pdf_url":null,"source":{"id":"https://openalex.org/S4210190737","display_name":"Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields","issn_l":"0556-2821","issn":["0556-2821","1089-4918","1538-4500","1550-2368","1550-7998"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review D","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:hep-th/0702124","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/hep-th/0702124","pdf_url":"https://arxiv.org/pdf/hep-th/0702124","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:cds.cern.ch:1017190","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/1017190","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":null},{"id":"doi:10.48550/arxiv.hep-th/0702124","doi":"https://doi.org/10.48550/arxiv.hep-th/0702124","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.hep-th/0702124","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:hep-th/0702124","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/hep-th/0702124","pdf_url":"https://arxiv.org/pdf/hep-th/0702124","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G4025687264","display_name":"Towards the microscopic structure of space-time","funder_award_id":"0300710","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G7529533946","display_name":"Towards the Microscopic Structure of Space-Time","funder_award_id":"0601800","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320337427","display_name":"Kavli Institute for Theoretical Physics, University of California, Santa Barbara","ror":"https://ror.org/02t274463"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2593429686.pdf","grobid_xml":"https://content.openalex.org/works/W2593429686.grobid-xml"},"referenced_works_count":22,"referenced_works":["https://openalex.org/W1972218766","https://openalex.org/W1979078813","https://openalex.org/W2003085617","https://openalex.org/W2003430944","https://openalex.org/W2004840376","https://openalex.org/W2007591208","https://openalex.org/W2009675941","https://openalex.org/W2016243304","https://openalex.org/W2019364320","https://openalex.org/W2021355051","https://openalex.org/W2040659793","https://openalex.org/W2048178323","https://openalex.org/W2064084583","https://openalex.org/W2096798206","https://openalex.org/W2107097129","https://openalex.org/W2108734736","https://openalex.org/W2109073651","https://openalex.org/W2146478425","https://openalex.org/W2201243710","https://openalex.org/W2964348607","https://openalex.org/W3043616634","https://openalex.org/W4254761869"],"related_works":["https://openalex.org/W2793102020","https://openalex.org/W2003430944","https://openalex.org/W2129595982","https://openalex.org/W2062386916","https://openalex.org/W1977689661","https://openalex.org/W2612296438","https://openalex.org/W2015778463","https://openalex.org/W2024368407","https://openalex.org/W4387369942","https://openalex.org/W2290230087"],"abstract_inverted_index":{"We":[0,24,98],"show":[1],"that":[2,103,114],"any":[3],"Lorentz-violating":[4],"theory":[5],"with":[6,15,90,106],"two":[7],"or":[8],"more":[9],"propagation":[10,92],"speeds":[11,93],"is":[12,124],"in":[13,55],"conflict":[14],"the":[16,35,41,46,68,72,81,88,120],"generalized":[17],"second":[18],"law":[19],"of":[20,49],"black":[21,42,50,108,121],"hole":[22,43,51,109,122],"thermodynamics.":[23],"do":[25],"this":[26,56],"by":[27,75],"identifying":[28],"a":[29],"classical":[30],"energy-extraction":[31],"method,":[32],"analogous":[33],"to":[34],"Penrose":[36],"process,":[37],"which":[38,79],"would":[39],"decrease":[40],"entropy.":[44],"Although":[45],"usual":[47],"definitions":[48],"entropy":[52],"are":[53],"ambiguous":[54],"context,":[57],"we":[58],"require":[59],"only":[60,86],"very":[61],"mild":[62],"assumptions":[63],"about":[64],"its":[65],"dependence":[66],"on":[67],"mass.":[69],"This":[70],"extends":[71],"result":[73],"found":[74],"Dubovsky":[76],"and":[77,84],"Sibiryakov,":[78],"uses":[80],"Hawking":[82],"effect":[83],"applies":[85],"if":[87,119],"fields":[89],"different":[91],"interact":[94],"just":[95],"through":[96],"gravity.":[97],"also":[99],"point":[100],"out":[101],"instabilities":[102],"could":[104],"interfere":[105],"their":[107],"perpetuum":[110],"mobile,":[111],"but":[112],"argue":[113],"these":[115],"can":[116],"be":[117],"neglected":[118],"mass":[123],"sufficiently":[125],"large.":[126]},"counts_by_year":[{"year":2026,"cited_by_count":4},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":8},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":8},{"year":2013,"cited_by_count":8},{"year":2012,"cited_by_count":4}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2017-03-16T00:00:00"}