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SUMMARY:Bayesian Analysis and Hubble Tension in Bulk Viscous Cosmological 
 Model in f(R\, L_m) Gravity
DTSTART;VALUE=DATE-TIME:20261029T100000Z
DTEND;VALUE=DATE-TIME:20261029T103000Z
DTSTAMP;VALUE=DATE-TIME:20261104T222908Z
UID:indico-contribution-6127@cern.ch
DESCRIPTION:Speakers: Saibal Ray (cCentre for Cosmology\, Astrophysics and
  Space Science (CCASS)\, GLA University)\nIn this work\, we investigate th
 e cosmic expansion history and address the Hubble tension within a bulk-vi
 scous cosmological model in 𝑓(𝑅\,𝐿𝑚) modified gravity. Conside
 ring the specific functional form 𝑓(𝑅\,𝐿𝑚) = αR + β𝐿𝑚\
 , we derive the modified field equations using a flat Friedmann-Lemaitre-R
 obertson-Walker (FLRW) metric in a matter-dominated era with bulk viscosit
 y 𝛱 = −3 𝜁 𝐻. We utilize recent independent observational datas
 ets\, including Cosmic Chronometers (CC)\, Pantheon+SH0ES Type Ia Supernov
 ae\, and DESI Baryon Acoustic Oscillations (BAO)\, to perform a robust Bay
 esian learning analysis via the PyMC3 library. The dynamical features of t
 he model—including the effective energy density\, cosmic pressure\, effe
 ctive equation of state (EOS) parameter\, and deceleration parameter—are
  reconstructed using the extracted best-fit parameters. Our findings show 
 a smooth transition from a decelerating phase (𝑞 > 0) to an acceleratin
 g phase (𝑞 \n\nhttps://indico.particle.mephi.ru/event/626/contributions
 /6127/
LOCATION:Sevastopol Hotel
URL:https://indico.particle.mephi.ru/event/626/contributions/6127/
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