{"id":"https://openalex.org/W2059623382","doi":"https://doi.org/10.1103/physrevd.82.124004","title":"w -cosmological singularities","display_name":"w -cosmological singularities","publication_year":2010,"publication_date":"2010-11-30","ids":{"openalex":"https://openalex.org/W2059623382","doi":"https://doi.org/10.1103/physrevd.82.124004","mag":"2059623382"},"language":"lv","primary_location":{"id":"doi:10.1103/physrevd.82.124004","doi":"https://doi.org/10.1103/physrevd.82.124004","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevd.82.124004","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","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://oa.upm.es/6697/","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5044494750","display_name":"Leonardo Fern\u00e1ndez-Jambrina","orcid":"https://orcid.org/0000-0002-4872-6973","observed_orcids":["https://orcid.org/0000-0002-4872-6973"]},"institutions":[{"id":"https://openalex.org/I88060688","display_name":"Universidad Polit\u00e9cnica de Madrid","ror":"https://ror.org/03n6nwv02","country_code":"ES","type":"education","lineage":["https://openalex.org/I88060688"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"L. Fern\u00e1ndez-Jambrina","raw_affiliation_strings":["Matem\u00e1tica Aplicada, E.T.S.I. Navales, Universidad Polit\u00e9cnica de Madrid, Arco de la Victoria s/n, E-28040 Madrid, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Matem\u00e1tica Aplicada, E.T.S.I. Navales, Universidad Polit\u00e9cnica de Madrid, Arco de la Victoria s/n, E-28040 Madrid, Spain","institution_ids":["https://openalex.org/I88060688"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5044494750"],"corresponding_institution_ids":["https://openalex.org/I88060688"],"apc_list":null,"apc_paid":null,"fwci":2.0431,"has_fulltext":true,"cited_by_count":52,"citation_normalized_percentile":{"value":0.85214801,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":"82","issue":"12","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.9980000257492065,"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"}},"topics":[{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.9980000257492065,"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"}},{"id":"https://openalex.org/T13080","display_name":"Advanced Differential Geometry Research","score":0.0003000000142492354,"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"}},{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.0003000000142492354,"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/cosmological-singularity","display_name":"cosmological singularity","score":0.8399999737739563},{"id":"https://openalex.org/keywords/weak-singularity","display_name":"weak singularity","score":0.8230000138282776},{"id":"https://openalex.org/keywords/homogeneous-isotropic-cosmological-models","display_name":"homogeneous isotropic cosmological models","score":0.9419999718666077},{"id":"https://openalex.org/keywords/ideal-fluid","display_name":"perfect fluid","score":0.9070000052452087},{"id":"https://openalex.org/keywords/taylor-expansion","display_name":"Taylor series expansion","score":0.4449999928474426}],"concepts":[{"id":"https://openalex.org/C29712183","wikidata":"https://www.wikidata.org/wiki/Q739293","display_name":"Barotropic fluid","level":2,"score":0.8638004064559937},{"id":"https://openalex.org/C12843","wikidata":"https://www.wikidata.org/wiki/Q201721","display_name":"Gravitational singularity","level":2,"score":0.791504442691803},{"id":"https://openalex.org/C184050105","wikidata":"https://www.wikidata.org/wiki/Q273163","display_name":"Isotropy","level":2,"score":0.6278489232063293},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.5104976892471313},{"id":"https://openalex.org/C2777382242","wikidata":"https://www.wikidata.org/wiki/Q6017816","display_name":"Index (typography)","level":2,"score":0.4638526439666748},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.4574119746685028},{"id":"https://openalex.org/C143724316","wikidata":"https://www.wikidata.org/wiki/Q312468","display_name":"Series (stratigraphy)","level":2,"score":0.4215967059135437},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.40566486120224},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.3366229832172394},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.32228243350982666},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.3003023564815521},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.21924886107444763},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.1259392499923706},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.07902896404266357},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.05978849530220032},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.0}],"mesh":[],"locations_count":6,"locations":[{"id":"doi:10.1103/physrevd.82.124004","doi":"https://doi.org/10.1103/physrevd.82.124004","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevd.82.124004","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:hispana.mcu.es:61084763","doi":null,"is_oa":true,"landing_page_url":"https://oa.upm.es/6697/","pdf_url":null,"source":{"id":"https://openalex.org/S4377196108","display_name":"Hispana","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Physical Review D, ISSN 1550-7998, 2010-12, Vol. 82, No. 12","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:oa.upm.es:6697","doi":null,"is_oa":true,"landing_page_url":"https://oa.upm.es/6697/","pdf_url":null,"source":{"id":"https://openalex.org/S4306402421","display_name":"Archivo Digital UPM (Universidad Polit\u00e9cnica de Madrid)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I88060688","host_organization_name":"Universidad Polit\u00e9cnica de Madrid","host_organization_lineage":["https://openalex.org/I88060688"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Physical Review D, ISSN 1550-7998, 2010-12, Vol. 82, No. 12","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:arXiv.org:1011.3656","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/1011.3656","pdf_url":"https://arxiv.org/pdf/1011.3656","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:dnet:archivodigit::d72bc4e9e03cc4161107b53c996e9b6e","doi":null,"is_oa":true,"landing_page_url":"http://oa.upm.es/6697/","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Physical Review D, ISSN 1550-7998, 2010-12, Vol. 82, No. 12","raw_type":"info:eu-repo/semantics/article"},{"id":"doi:10.48550/arxiv.1011.3656","doi":"https://doi.org/10.48550/arxiv.1011.3656","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.1011.3656","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:hispana.mcu.es:61084763","doi":null,"is_oa":true,"landing_page_url":"https://oa.upm.es/6697/","pdf_url":null,"source":{"id":"https://openalex.org/S4377196108","display_name":"Hispana","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Physical Review D, ISSN 1550-7998, 2010-12, Vol. 82, No. 12","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321919","display_name":"Euskal Herriko Unibertsitatea","ror":"https://ror.org/000xsnr85"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2059623382.pdf","grobid_xml":"https://content.openalex.org/works/W2059623382.grobid-xml"},"referenced_works_count":51,"referenced_works":["https://openalex.org/W604626987","https://openalex.org/W1537505738","https://openalex.org/W1853767801","https://openalex.org/W1963581370","https://openalex.org/W1964612370","https://openalex.org/W1969570109","https://openalex.org/W1973734116","https://openalex.org/W1988812051","https://openalex.org/W1991107487","https://openalex.org/W1992048240","https://openalex.org/W1998993416","https://openalex.org/W2008432753","https://openalex.org/W2009388229","https://openalex.org/W2009467521","https://openalex.org/W2016769294","https://openalex.org/W2029403139","https://openalex.org/W2033616034","https://openalex.org/W2033772839","https://openalex.org/W2040248396","https://openalex.org/W2042416392","https://openalex.org/W2048123788","https://openalex.org/W2048443063","https://openalex.org/W2049024258","https://openalex.org/W2052998795","https://openalex.org/W2057351095","https://openalex.org/W2062424168","https://openalex.org/W2066277735","https://openalex.org/W2069183822","https://openalex.org/W2073832139","https://openalex.org/W2078608722","https://openalex.org/W2084667914","https://openalex.org/W2086026150","https://openalex.org/W2086436511","https://openalex.org/W2086528049","https://openalex.org/W2098445507","https://openalex.org/W2100104878","https://openalex.org/W2103427952","https://openalex.org/W2103611343","https://openalex.org/W2112549839","https://openalex.org/W2114413990","https://openalex.org/W2118265220","https://openalex.org/W2124056919","https://openalex.org/W2130419172","https://openalex.org/W2136696603","https://openalex.org/W2154748230","https://openalex.org/W2159245498","https://openalex.org/W2160253850","https://openalex.org/W2171173077","https://openalex.org/W2239117083","https://openalex.org/W2950192838","https://openalex.org/W3103448474"],"related_works":["https://openalex.org/W2042416392","https://openalex.org/W1529696304","https://openalex.org/W2951282871","https://openalex.org/W3037228698","https://openalex.org/W2142747716","https://openalex.org/W2081434838","https://openalex.org/W2840688400","https://openalex.org/W1589536152","https://openalex.org/W2161924528","https://openalex.org/W7095091543"],"abstract_inverted_index":{"In":[0],"this":[1],"paper":[2],"we":[3],"characterize":[4],"barotropic":[5,56],"index":[6,57],"singularities":[7,65],"of":[8,58],"homogeneous":[9],"isotropic":[10],"cosmological":[11],"models":[12,73],"[M.":[13],"P.":[14],"Da\\ifmmode":[15],"\\mbox{\\c{}}\\else":[16],"\\c{}\\fi{}browski":[17],"and":[18,49,78],"T.":[19],"Denkiewicz,":[20],"Phys.":[21],"Rev.":[22],"D":[23],"79,":[24],"063521":[25],"(2009).].":[26],"They":[27],"are":[28,52,66,81],"shown":[29],"to":[30],"appear":[31],"in":[32,45],"cosmologies":[33],"for":[34,71,74],"which":[35,46,75],"the":[36,47,55,59,64,76,79],"scale":[37],"factor":[38],"is":[39,62],"analytical":[40],"with":[41],"a":[42],"Taylor":[43],"series":[44],"linear":[48],"quadratic":[50],"terms":[51],"absent.":[53],"Though":[54],"perfect":[60],"fluid":[61],"singular,":[63],"weak,":[67],"as":[68],"it":[69],"happens":[70],"other":[72],"density":[77],"pressure":[80],"regular.":[82]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":4}],"updated_date":"2026-11-05T12:25:35.769452","created_date":"2016-06-24T00:00:00"}