{"id":"https://openalex.org/W3103887724","doi":null,"title":"The Bulk Viscous String Cosmology in An Anisotropic Universe With Late Time Acceleration","display_name":"The Bulk Viscous String Cosmology in An Anisotropic Universe With Late Time Acceleration","publication_year":2016,"publication_date":"2016-08-17","ids":{"openalex":"https://openalex.org/W3103887724","mag":"3103887724"},"language":"en","primary_location":{"id":"pmh:oai:CiteSeerX.psu:10.1.1.759.1263","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.759.1263","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/1211.4413.pdf","raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5032177042","display_name":"Hassan Amirhashchi","orcid":"https://orcid.org/0000-0002-0665-2101","observed_orcids":["https://orcid.org/0000-0002-0665-2101"]},"institutions":[{"id":"https://openalex.org/I189748745","display_name":"Islamic Azad University Mahshahr","ror":"https://ror.org/01y361889","country_code":"IR","type":"education","lineage":["https://openalex.org/I110525433","https://openalex.org/I189748745"]}],"countries":["IR"],"is_corresponding":true,"raw_author_name":"Hassan Amirhashchi","raw_affiliation_strings":["Department of Physics, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran","institution_ids":["https://openalex.org/I189748745"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5032177042"],"corresponding_institution_ids":["https://openalex.org/I189748745"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"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":0.9994999766349792,"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":0.9994999766349792,"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/T11415","display_name":"Noncommutative and Quantum Gravity Theories","score":9.999999747378752e-05,"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/T13080","display_name":"Advanced Differential Geometry Research","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/bulk-viscosity","display_name":"bulk viscosity","score":0.8309999704360962},{"id":"https://openalex.org/keywords/cosmic-strings","display_name":"cosmic strings","score":0.8069999814033508},{"id":"https://openalex.org/keywords/bianchi-type-ii-cosmology","display_name":"Bianchi type II cosmology","score":0.9279999732971191},{"id":"https://openalex.org/keywords/anisotropic-universe","display_name":"anisotropic universe","score":0.9559999704360962},{"id":"https://openalex.org/keywords/late-time-cosmic-acceleration","display_name":"late-time cosmic acceleration","score":0.6740000247955322},{"id":"https://openalex.org/keywords/stiff-equation-of-state","display_name":"stiff equation of state","score":0.8880000114440918},{"id":"https://openalex.org/keywords/exact-solutions","display_name":"exact solutions","score":0.671999990940094},{"id":"https://openalex.org/keywords/decelerating-to-accelerating-transition","display_name":"decelerating to accelerating transition","score":0.7590000033378601}],"concepts":[{"id":"https://openalex.org/C181556327","wikidata":"https://www.wikidata.org/wiki/Q4014770","display_name":"Volume viscosity","level":3,"score":0.7860990762710571},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.781186580657959},{"id":"https://openalex.org/C26405456","wikidata":"https://www.wikidata.org/wiki/Q338","display_name":"Cosmology","level":2,"score":0.629611611366272},{"id":"https://openalex.org/C84999194","wikidata":"https://www.wikidata.org/wiki/Q1","display_name":"Universe","level":2,"score":0.6256176829338074},{"id":"https://openalex.org/C2778086583","wikidata":"https://www.wikidata.org/wiki/Q3363554","display_name":"Deceleration parameter","level":4,"score":0.6178393959999084},{"id":"https://openalex.org/C127172972","wikidata":"https://www.wikidata.org/wiki/Q128709","display_name":"Viscosity","level":2,"score":0.6058092713356018},{"id":"https://openalex.org/C157486923","wikidata":"https://www.wikidata.org/wiki/Q1376436","display_name":"String (physics)","level":2,"score":0.59971022605896},{"id":"https://openalex.org/C85725439","wikidata":"https://www.wikidata.org/wiki/Q466686","display_name":"Anisotropy","level":2,"score":0.5532705187797546},{"id":"https://openalex.org/C20154449","wikidata":"https://www.wikidata.org/wiki/Q1129469","display_name":"Metric expansion of space","level":4,"score":0.5220232605934143},{"id":"https://openalex.org/C117896860","wikidata":"https://www.wikidata.org/wiki/Q11376","display_name":"Acceleration","level":2,"score":0.4962359070777893},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.4945988357067108},{"id":"https://openalex.org/C71351571","wikidata":"https://www.wikidata.org/wiki/Q7935890","display_name":"Viscous liquid","level":2,"score":0.48512184619903564},{"id":"https://openalex.org/C53810900","wikidata":"https://www.wikidata.org/wiki/Q214967","display_name":"Equation of state","level":2,"score":0.4104546308517456},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.40586286783218384},{"id":"https://openalex.org/C2992891135","wikidata":"https://www.wikidata.org/wiki/Q18346","display_name":"Cosmological model","level":3,"score":0.21927383542060852},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.21908679604530334},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.18942075967788696},{"id":"https://openalex.org/C172790937","wikidata":"https://www.wikidata.org/wiki/Q18343","display_name":"Dark energy","level":3,"score":0.12440565228462219},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.11730799078941345},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.10610073804855347}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:CiteSeerX.psu:10.1.1.759.1263","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.759.1263","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/1211.4413.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":49,"referenced_works":["https://openalex.org/W287087384","https://openalex.org/W1535471563","https://openalex.org/W1971867433","https://openalex.org/W1976030533","https://openalex.org/W1977333453","https://openalex.org/W1984592804","https://openalex.org/W1992925538","https://openalex.org/W1993805430","https://openalex.org/W2006497728","https://openalex.org/W2009797859","https://openalex.org/W2010488425","https://openalex.org/W2027431968","https://openalex.org/W2027875859","https://openalex.org/W2030389283","https://openalex.org/W2037951940","https://openalex.org/W2039326276","https://openalex.org/W2050062115","https://openalex.org/W2050432449","https://openalex.org/W2053619436","https://openalex.org/W2055131339","https://openalex.org/W2056248630","https://openalex.org/W2061728109","https://openalex.org/W2069700747","https://openalex.org/W2071939771","https://openalex.org/W2073603601","https://openalex.org/W2076007814","https://openalex.org/W2078185540","https://openalex.org/W2087321685","https://openalex.org/W2089216546","https://openalex.org/W2100577312","https://openalex.org/W2101345715","https://openalex.org/W2112136116","https://openalex.org/W2113047816","https://openalex.org/W2113450981","https://openalex.org/W2133021718","https://openalex.org/W2142768579","https://openalex.org/W2146072040","https://openalex.org/W2150694768","https://openalex.org/W2154294403","https://openalex.org/W2172015328","https://openalex.org/W2178962940","https://openalex.org/W2243423914","https://openalex.org/W3003408334","https://openalex.org/W3007754162","https://openalex.org/W3099357403","https://openalex.org/W3099556463","https://openalex.org/W4231256132","https://openalex.org/W4238312165","https://openalex.org/W4240440029"],"related_works":["https://openalex.org/W7097301829","https://openalex.org/W2024309804","https://openalex.org/W2075491260","https://openalex.org/W2075337639","https://openalex.org/W2104130154","https://openalex.org/W2381367633","https://openalex.org/W2020191570","https://openalex.org/W7163925348","https://openalex.org/W2056189332","https://openalex.org/W2115722863"],"abstract_inverted_index":{"A":[0],"model":[1,27],"of":[2,14,43,45,69,75,87,110,136],"a":[3,12,62,126],"cloud":[4],"formed":[5],"by":[6],"massive":[7],"strings":[8,82,89],"is":[9,28,55,95],"used":[10],"as":[11],"source":[13],"Bianchi":[15],"type":[16],"II":[17],"cases.":[18],"We":[19],"assume":[20],"that":[21,57,104],"the":[22,26,31,41,46,51,58,67,70,73,78,85,92,105,108,111],"expansion":[23,109],"(\u03b8)":[24],"in":[25,50,66,84],"proportional":[29],"to":[30,48,113,125],"shear":[32],"(\u03c3).":[33],"To":[34],"get":[35],"an":[36,121],"exact":[37],"solution,":[38],"we":[39,102],"consider":[40],"equation":[42],"state":[44],"fluid":[47],"be":[49,114],"stiff":[52],"form.":[53],"It":[54],"found":[56],"bulk":[59,76],"viscosity":[60,77,106],"played":[61],"very":[63],"important":[64],"role":[65],"history":[68],"universe.":[71],"In":[72],"presence":[74],"particles":[79],"dominate":[80,90],"over":[81,91],"whereas":[83],"absence":[86],"it,":[88],"particles,":[93],"which":[94],"not":[96],"consistent":[97],"with":[98],"recent":[99],"observations.":[100],"Also":[101],"observe":[103],"causes":[107],"universe":[112],"accelerating.":[115],"Our":[116],"models":[117,138],"are":[118,139],"evolving":[119],"from":[120],"early":[122],"decelerating":[123],"phase":[124],"late":[127],"time":[128],"accelerating":[129],"phase.":[130],"The":[131],"physical":[132],"and":[133],"geometrical":[134],"behaviors":[135],"these":[137],"discussed.":[140]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2020-11-23T00:00:00"}
