{"id":"https://openalex.org/W7215914423","doi":"https://doi.org/10.48550/arxiv.2610.01407","title":"Graceful Exit to Radiation Domination in the Starobinsky Model: A Dynamical Realization","display_name":"Graceful Exit to Radiation Domination in the Starobinsky Model: A Dynamical Realization","publication_year":2026,"publication_date":"2026-10-01","ids":{"openalex":"https://openalex.org/W7215914423","doi":"https://doi.org/10.48550/arxiv.2610.01407"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2610.01407","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.01407","pdf_url":"https://arxiv.org/pdf/2610.01407","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/2610.01407","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5136173497","display_name":"Bhargabi Saha","orcid":"https://orcid.org/0009-0005-5661-7733","observed_orcids":["https://orcid.org/0009-0005-5661-7733"]},"institutions":[{"id":"https://openalex.org/I1317621060","display_name":"Indian Institute of Technology Guwahati","ror":"https://ror.org/0022nd079","country_code":"IN","type":"education","lineage":["https://openalex.org/I1317621060"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Saha, Bhargabi","raw_affiliation_strings":["Department of Physics , Indian Institute of Technology Guwahati , Guwahati 781 039 , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics , Indian Institute of Technology Guwahati , Guwahati 781 039 , India","institution_ids":["https://openalex.org/I1317621060"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5091475713","display_name":"Malay Kumar Nandy","orcid":"https://orcid.org/0000-0002-2640-0497","observed_orcids":["https://orcid.org/0000-0002-2640-0497"]},"institutions":[{"id":"https://openalex.org/I1317621060","display_name":"Indian Institute of Technology Guwahati","ror":"https://ror.org/0022nd079","country_code":"IN","type":"education","lineage":["https://openalex.org/I1317621060"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Nandy, Malay K.","raw_affiliation_strings":["Department of Physics , Indian Institute of Technology Guwahati , Guwahati 781 039 , India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics , Indian Institute of Technology Guwahati , Guwahati 781 039 , India","institution_ids":["https://openalex.org/I1317621060"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I1317621060"],"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":0.0,"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/T10025","display_name":"Black Holes and Theoretical Physics","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/starobinsky-model","display_name":"Starobinsky model","score":0.8730000257492065},{"id":"https://openalex.org/keywords/graceful-exit","display_name":"graceful exit","score":0.7229999899864197},{"id":"https://openalex.org/keywords/reheating","display_name":"reheating","score":0.7099999785423279},{"id":"https://openalex.org/keywords/radiation-domination","display_name":"radiation domination","score":0.7549999952316284},{"id":"https://openalex.org/keywords/slow-roll-inflation","display_name":"slow-roll inflation","score":0.5899999737739563},{"id":"https://openalex.org/keywords/backreaction","display_name":"backreaction","score":0.5509999990463257},{"id":"https://openalex.org/keywords/early-universe-dynamics","display_name":"early universe dynamics","score":0.6019999980926514}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.6563000082969666},{"id":"https://openalex.org/C2781089630","wikidata":"https://www.wikidata.org/wiki/Q21856745","display_name":"Realization (probability)","level":2,"score":0.6456000208854675},{"id":"https://openalex.org/C153385146","wikidata":"https://www.wikidata.org/wiki/Q18335","display_name":"Radiation","level":2,"score":0.5945000052452087},{"id":"https://openalex.org/C200941418","wikidata":"https://www.wikidata.org/wiki/Q273508","display_name":"Inflation (cosmology)","level":2,"score":0.5293999910354614},{"id":"https://openalex.org/C84999194","wikidata":"https://www.wikidata.org/wiki/Q1","display_name":"Universe","level":2,"score":0.4440999925136566},{"id":"https://openalex.org/C168167062","wikidata":"https://www.wikidata.org/wiki/Q1117970","display_name":"Component (thermodynamics)","level":2,"score":0.43630000948905945},{"id":"https://openalex.org/C187970030","wikidata":"https://www.wikidata.org/wiki/Q1185086","display_name":"Background radiation","level":3,"score":0.3736000061035156},{"id":"https://openalex.org/C26405456","wikidata":"https://www.wikidata.org/wiki/Q338","display_name":"Cosmology","level":2,"score":0.35589998960494995},{"id":"https://openalex.org/C30864177","wikidata":"https://www.wikidata.org/wiki/Q742982","display_name":"Friedmann\u2013Lema\u00eetre\u2013Robertson\u2013Walker metric","level":3,"score":0.3400000035762787},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.3301999866962433},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.3160000145435333},{"id":"https://openalex.org/C172790937","wikidata":"https://www.wikidata.org/wiki/Q18343","display_name":"Dark energy","level":3,"score":0.2768000066280365},{"id":"https://openalex.org/C145912823","wikidata":"https://www.wikidata.org/wiki/Q113558","display_name":"Dynamics (music)","level":2,"score":0.274399995803833},{"id":"https://openalex.org/C52957995","wikidata":"https://www.wikidata.org/wiki/Q11382","display_name":"Conservation of energy","level":2,"score":0.2720000147819519},{"id":"https://openalex.org/C2983502797","wikidata":"https://www.wikidata.org/wiki/Q828402","display_name":"Energy density","level":2,"score":0.257099986076355},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.2540000081062317},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.25290000438690186}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2610.01407","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.01407","pdf_url":"https://arxiv.org/pdf/2610.01407","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.2610.01407","doi":"https://doi.org/10.48550/arxiv.2610.01407","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2610.01407","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:2610.01407","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.01407","pdf_url":"https://arxiv.org/pdf/2610.01407","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":[],"funders":[{"id":"https://openalex.org/F4320322724","display_name":"Ministry of Education, India","ror":"https://ror.org/048xjjh50"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7215914423.pdf","grobid_xml":"https://content.openalex.org/works/W7215914423.grobid-xml"},"referenced_works_count":41,"referenced_works":["https://openalex.org/W1553851326","https://openalex.org/W1574779069","https://openalex.org/W1583142515","https://openalex.org/W1588422802","https://openalex.org/W1607662798","https://openalex.org/W1971230011","https://openalex.org/W1973861971","https://openalex.org/W1974682093","https://openalex.org/W1977414656","https://openalex.org/W1986669506","https://openalex.org/W1988021325","https://openalex.org/W2007443706","https://openalex.org/W2007479791","https://openalex.org/W2012869970","https://openalex.org/W2017634382","https://openalex.org/W2029886567","https://openalex.org/W2034898285","https://openalex.org/W2065245362","https://openalex.org/W2065294858","https://openalex.org/W2066952143","https://openalex.org/W2068677244","https://openalex.org/W2071424294","https://openalex.org/W2074498430","https://openalex.org/W2074997845","https://openalex.org/W2112197499","https://openalex.org/W2134251287","https://openalex.org/W2147141645","https://openalex.org/W2152147800","https://openalex.org/W2158442860","https://openalex.org/W2160253850","https://openalex.org/W2423317333","https://openalex.org/W2595522286","https://openalex.org/W2949856271","https://openalex.org/W3047346005","https://openalex.org/W3048100386","https://openalex.org/W4211141710","https://openalex.org/W4256093087","https://openalex.org/W4292875581","https://openalex.org/W4389626562","https://openalex.org/W4415621541","https://openalex.org/W7161120450"],"related_works":["https://openalex.org/W4412988168","https://openalex.org/W1994255851","https://openalex.org/W7169791383","https://openalex.org/W3044549896","https://openalex.org/W4416934766","https://openalex.org/W3045332071","https://openalex.org/W2331887234","https://openalex.org/W1607662798","https://openalex.org/W7216157128","https://openalex.org/W3210114065"],"abstract_inverted_index":{"The":[0],"Starobinsky":[1,222],"model":[2],"provides":[3,145,207],"a":[4,12,43,85,134,146,152,188,208],"successful":[5,197],"realization":[6,210],"of":[7,28,46,79,187,211],"inflation":[8,150],"and":[9,52,70,88,118,151,214],"serves":[10],"as":[11,162],"benchmark":[13],"for":[14,76,196],"alternative":[15],"inflationary":[16,101],"models.":[17],"Motivated":[18],"by":[19,106,139],"its":[20],"observational":[21],"success,":[22],"we":[23,41],"investigate":[24],"the":[25,29,61,65,77,80,92,107,113,119,131,163,169,178,185,193,203,215,221],"dynamical":[26,47],"evolution":[27,98],"early":[30],"Universe":[31,87],"within":[32],"this":[33],"framework.":[34],"Incorporating":[35],"radiation":[36,53,71,111,114,141,159,170,218],"production":[37],"from":[38,91,149],"scalaron":[39,50,69,132,164,180],"decay,":[40],"formulate":[42],"coupled":[44,204],"system":[45],"equations":[48],"describing":[49],"depletion":[51],"buildup":[54],"while":[55],"ensuring":[56],"exact":[57,96],"energy":[58,165,171,181],"conservation":[59],"in":[60,220],"expanding":[62],"background.":[63],"In":[64],"Friedmann":[66],"equation,":[67],"both":[68],"components":[72],"gravitate,":[73],"thereby":[74],"accounting":[75],"backreaction":[78],"generated":[81],"radiation.":[82],"Starting":[83],"with":[84,168],"radiation-free":[86],"initial":[89],"conditions":[90,121],"standard":[93],"slow-roll":[94,120],"approximations,":[95],"numerical":[97],"shows":[99],"that":[100,202],"dynamics":[102,206],"is":[103,166],"predominantly":[104],"governed":[105],"scalaron.":[108],"Despite":[109],"continuous":[110],"production,":[112],"component":[115],"remains":[116],"subdominant,":[117],"persist":[122],"throughout":[123],"inflation,":[124,130],"yielding":[125],"approximately":[126],"60":[127],"e-folds.":[128],"Following":[129],"enters":[133],"damped":[135],"oscillatory":[136],"phase":[137],"accompanied":[138],"rapid":[140],"growth.":[142],"This":[143,183],"transition":[144,216],"graceful":[147,212],"exit":[148,213],"smooth":[153],"entry":[154],"into":[155],"reheating.":[156,198],"During":[157],"reheating,":[158],"grows":[160],"continuously":[161],"depleted,":[167],"density":[172],"ultimately":[173],"becoming":[174],"substantially":[175],"larger":[176],"than":[177],"residual":[179],"density.":[182],"indicates":[184],"onset":[186],"hot,":[189],"radiation-dominated":[190],"phase,":[191],"satisfying":[192],"Kofman-Yi":[194],"criterion":[195],"Our":[199],"results":[200],"demonstrate":[201],"scalaron-radiation":[205],"self-consistent":[209],"to":[217],"domination":[219],"model.":[223]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-10-03T00:00:00"}