{"id":"https://openalex.org/W7212112403","doi":"https://doi.org/10.48550/arxiv.2609.09193","title":"Evolving wormhole cosmology: modified Friedmann dynamics and observational constraints","display_name":"Evolving wormhole cosmology: modified Friedmann dynamics and observational constraints","publication_year":2026,"publication_date":"2026-09-02","ids":{"openalex":"https://openalex.org/W7212112403","doi":"https://doi.org/10.48550/arxiv.2609.09193"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2609.09193","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.09193","pdf_url":"https://arxiv.org/pdf/2609.09193","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"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2609.09193","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111178225","display_name":"Aritra Sanyal","orcid":"https://orcid.org/0009-0003-0383-8335","observed_orcids":["https://orcid.org/0009-0003-0383-8335"]},"institutions":[{"id":"https://openalex.org/I170979836","display_name":"Jadavpur University","ror":"https://ror.org/02af4h012","country_code":"IN","type":"education","lineage":["https://openalex.org/I170979836"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Sanyal, Aritra","raw_affiliation_strings":["Department of Mathematics , Jadavpur University , Kolkata 700032 , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics , Jadavpur University , Kolkata 700032 , India","institution_ids":["https://openalex.org/I170979836"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081529818","display_name":"Kazuharu Bamba","orcid":"https://orcid.org/0000-0001-9720-8817","observed_orcids":["https://orcid.org/0000-0001-9720-8817"]},"institutions":[{"id":"https://openalex.org/I58089638","display_name":"Fukushima University","ror":"https://ror.org/03zjb7z20","country_code":"JP","type":"education","lineage":["https://openalex.org/I58089638"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Bamba, Kazuharu","raw_affiliation_strings":["Faculty of Symbiotic Systems Science , Fukushima University , Fukushima 960-1296 , Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Symbiotic Systems Science , Fukushima University , Fukushima 960-1296 , Japan","institution_ids":["https://openalex.org/I58089638"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5017530976","display_name":"Prabir Rudra","orcid":"https://orcid.org/0000-0002-5791-5696","observed_orcids":["https://orcid.org/0000-0002-5791-5696"]},"institutions":[{"id":"https://openalex.org/I4405271698","display_name":"Asutosh College","ror":"https://ror.org/02vvsvg18","country_code":"IN","type":"education","lineage":["https://openalex.org/I4405271698"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Rudra, Prabir","raw_affiliation_strings":["Department of Mathematics , Asutosh College , Kolkata 700026 , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics , Asutosh College , Kolkata 700026 , India","institution_ids":["https://openalex.org/I4405271698"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"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":0.0,"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/traversable-wormholes","display_name":"traversable wormholes","score":0.8809999823570251},{"id":"https://openalex.org/keywords/morris-thorne-wormhole","display_name":"Morris-Thorne wormhole","score":0.7860000133514404},{"id":"https://openalex.org/keywords/modified-friedmann-equations","display_name":"modified Friedmann equations","score":0.9319999814033508},{"id":"https://openalex.org/keywords/shape-functions","display_name":"shape functions","score":0.675000011920929},{"id":"https://openalex.org/keywords/volume-averaging","display_name":"volume averaging","score":0.5109999775886536},{"id":"https://openalex.org/keywords/cosmic-chronometers","display_name":"cosmic chronometers","score":0.8489999771118164},{"id":"https://openalex.org/keywords/baryon-acoustic-oscillations","display_name":"baryon acoustic oscillations","score":0.9869999885559082},{"id":"https://openalex.org/keywords/desorption-electrospray-ionization","display_name":"DESI","score":0.5389999747276306},{"id":"https://openalex.org/keywords/hubble-parameter","display_name":"Hubble parameter","score":0.75},{"id":"https://openalex.org/keywords/dark-energy-equation-of-state","display_name":"dark energy equation of state","score":0.8880000114440918},{"id":"https://openalex.org/keywords/deceleration-acceleration-transition","display_name":"deceleration-acceleration transition","score":0.8960000276565552}],"concepts":[{"id":"https://openalex.org/C29013271","wikidata":"https://www.wikidata.org/wiki/Q7544","display_name":"Wormhole","level":2,"score":0.9501000046730042},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7318999767303467},{"id":"https://openalex.org/C155281189","wikidata":"https://www.wikidata.org/wiki/Q3518150","display_name":"Tensor (intrinsic definition)","level":2,"score":0.5404000282287598},{"id":"https://openalex.org/C32848918","wikidata":"https://www.wikidata.org/wiki/Q845789","display_name":"Observable","level":2,"score":0.5340999960899353},{"id":"https://openalex.org/C53810900","wikidata":"https://www.wikidata.org/wiki/Q214967","display_name":"Equation of state","level":2,"score":0.5202000141143799},{"id":"https://openalex.org/C207297109","wikidata":"https://www.wikidata.org/wiki/Q15605","display_name":"Cosmic microwave background","level":3,"score":0.49790000915527344},{"id":"https://openalex.org/C2780388253","wikidata":"https://www.wikidata.org/wiki/Q5421508","display_name":"Exponent","level":2,"score":0.48660001158714294},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.4765999913215637},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.42910000681877136},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.39890000224113464},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.3880000114440918},{"id":"https://openalex.org/C178635117","wikidata":"https://www.wikidata.org/wiki/Q747499","display_name":"RADIUS","level":2,"score":0.382999986410141},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.3686999976634979},{"id":"https://openalex.org/C144386022","wikidata":"https://www.wikidata.org/wiki/Q1332997","display_name":"Scale factor (cosmology)","level":5,"score":0.3483999967575073},{"id":"https://openalex.org/C85405196","wikidata":"https://www.wikidata.org/wiki/Q467736","display_name":"Friedmann equations","level":4,"score":0.34790000319480896},{"id":"https://openalex.org/C26405456","wikidata":"https://www.wikidata.org/wiki/Q338","display_name":"Cosmology","level":2,"score":0.3434999883174896},{"id":"https://openalex.org/C147452769","wikidata":"https://www.wikidata.org/wiki/Q11452","display_name":"General relativity","level":2,"score":0.3276999890804291},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.3021000027656555},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.3005000054836273},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.29420000314712524},{"id":"https://openalex.org/C84999194","wikidata":"https://www.wikidata.org/wiki/Q1","display_name":"Universe","level":2,"score":0.2935999929904938},{"id":"https://openalex.org/C62796785","wikidata":"https://www.wikidata.org/wiki/Q12902765","display_name":"Cosmic background radiation","level":4,"score":0.2806999981403351},{"id":"https://openalex.org/C2779569378","wikidata":"https://www.wikidata.org/wiki/Q25303768","display_name":"Phenomenological model","level":2,"score":0.2797999978065491},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.27799999713897705},{"id":"https://openalex.org/C59375849","wikidata":"https://www.wikidata.org/wiki/Q5013513","display_name":"COSMIC cancer database","level":2,"score":0.2705000042915344},{"id":"https://openalex.org/C99844830","wikidata":"https://www.wikidata.org/wiki/Q102441924","display_name":"Scaling","level":2,"score":0.2705000042915344},{"id":"https://openalex.org/C148043351","wikidata":"https://www.wikidata.org/wiki/Q4456944","display_name":"Current (fluid)","level":2,"score":0.2662000060081482},{"id":"https://openalex.org/C130187892","wikidata":"https://www.wikidata.org/wiki/Q133327","display_name":"Spacetime","level":2,"score":0.26510000228881836},{"id":"https://openalex.org/C20154449","wikidata":"https://www.wikidata.org/wiki/Q1129469","display_name":"Metric expansion of space","level":4,"score":0.2621000111103058},{"id":"https://openalex.org/C96402334","wikidata":"https://www.wikidata.org/wiki/Q3030793","display_name":"Space time","level":2,"score":0.2565999925136566}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2609.09193","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.09193","pdf_url":"https://arxiv.org/pdf/2609.09193","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":"doi:10.48550/arxiv.2609.09193","doi":"https://doi.org/10.48550/arxiv.2609.09193","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2609.09193","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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2609.09193","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.09193","pdf_url":"https://arxiv.org/pdf/2609.09193","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/G627994260","display_name":"Challenge to cosmic tensions in general relativity by theoretical study and observational analysis","funder_award_id":"25KF0176","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G7437577996","display_name":"Theoretical study and observational constraints on cosmology beyond the standard cosmological model","funder_award_id":"24KF0100","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320311382","display_name":"Jadavpur University","ror":"https://ror.org/02af4h012"},{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7212112403.pdf","grobid_xml":"https://content.openalex.org/works/W7212112403.grobid-xml"},"referenced_works_count":54,"referenced_works":["https://openalex.org/W1791150725","https://openalex.org/W1853767801","https://openalex.org/W1989589910","https://openalex.org/W1994980245","https://openalex.org/W2012944238","https://openalex.org/W2030202166","https://openalex.org/W2036439761","https://openalex.org/W2042861014","https://openalex.org/W2048446165","https://openalex.org/W2048817324","https://openalex.org/W2063397409","https://openalex.org/W2072034134","https://openalex.org/W2073193588","https://openalex.org/W2073603601","https://openalex.org/W2076533122","https://openalex.org/W2077540976","https://openalex.org/W2079528516","https://openalex.org/W2084479612","https://openalex.org/W2086897902","https://openalex.org/W2091262560","https://openalex.org/W2102197207","https://openalex.org/W2104466725","https://openalex.org/W2108313227","https://openalex.org/W2123076672","https://openalex.org/W2124601931","https://openalex.org/W2127804216","https://openalex.org/W2128330179","https://openalex.org/W2131279590","https://openalex.org/W2131770312","https://openalex.org/W2133383937","https://openalex.org/W2137854015","https://openalex.org/W2139440433","https://openalex.org/W2141564053","https://openalex.org/W2146293885","https://openalex.org/W2154858141","https://openalex.org/W2165692895","https://openalex.org/W2177433753","https://openalex.org/W2252795400","https://openalex.org/W2323263137","https://openalex.org/W2467993439","https://openalex.org/W2621229679","https://openalex.org/W2761148789","https://openalex.org/W2900127069","https://openalex.org/W2936349953","https://openalex.org/W2963891446","https://openalex.org/W2982501459","https://openalex.org/W3004014367","https://openalex.org/W3135850969","https://openalex.org/W4221167036","https://openalex.org/W4283580920","https://openalex.org/W4286702585","https://openalex.org/W4394029306","https://openalex.org/W4410636511","https://openalex.org/W6910464191"],"related_works":["https://openalex.org/W7165733099","https://openalex.org/W4289133929","https://openalex.org/W4396599961","https://openalex.org/W1987264621","https://openalex.org/W2809068858","https://openalex.org/W6990080328","https://openalex.org/W7134907824","https://openalex.org/W4389742330","https://openalex.org/W4406781320","https://openalex.org/W4412512598"],"abstract_inverted_index":{"We":[0,45],"construct":[1],"an":[2,132],"evolving":[3,148],"wormhole":[4,26,42,67,158],"cosmological":[5,145],"model":[6,84],"from":[7,160],"a":[8,12,18,30,35,40,56,114,124,143,152],"Morris--Thorne":[9],"metric":[10],"with":[11,39,73,85,109,128],"separable,":[13],"time-dependent":[14],"shape":[15],"function":[16],"in":[17],"spatially":[19],"flat":[20],"Friedmann--Lemaitre--Robertson--Walker":[21],"background,":[22],"deriving":[23],"the":[24,48,65,83,110],"corrected":[25],"energy-momentum":[27],"tensor":[28],"and":[29,51,61,92,121,131],"volume-averaging":[31],"procedure":[32],"that":[33,47,64,103],"yields":[34],"modified":[36],"Friedmann":[37],"equation":[38,68,135],"redshift-dependent":[41],"correction":[43],"term.":[44],"show":[46,102],"shape-function":[49],"index":[50],"throat-evolution":[52],"exponent":[53,59],"combine":[54],"into":[55],"single":[57],"macroscopic":[58],"$\u03b2$,":[60],"we":[62],"demonstrate":[63],"resulting":[66],"of":[69,136],"state":[70,137],"is":[71],"consistent":[72,127],"this":[74],"geometric":[75],"averaging.":[76],"All":[77],"traversability":[78],"conditions":[79],"are":[80,106],"verified.":[81],"Confronting":[82],"cosmic":[86],"chronometer,":[87],"DESI":[88],"Data":[89],"Release~2":[90],"BAO,":[91],"standard":[93],"BAO":[94],"data":[95],"across":[96],"seven":[97],"dataset":[98],"combinations,":[99],"our":[100],"findings":[101],"all":[104],"combinations":[105],"mutually":[107],"consistent,":[108],"joint":[111],"fit":[112],"giving":[113],"present-day":[115],"expansion":[116],"rate":[117],"intermediate":[118],"between":[119],"local":[120],"CMB-inferred":[122],"values,":[123],"deceleration-to-acceleration":[125],"transition":[126],"independent":[129],"determinations,":[130],"effective":[133],"dark-energy":[134,162],"close":[138],"to,":[139],"but":[140],"distinguishable":[141],"from,":[142],"pure":[144],"constant.":[146],"The":[147],"throat":[149],"radius":[150],"offers":[151],"novel,":[153],"geometry-specific":[154],"observable":[155],"for":[156],"discriminating":[157],"spacetimes":[159],"phenomenological":[161],"parametrisations.":[163]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-09-11T00:00:00"}
