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SUMMARY:Flash talk: Phantom divide crossing with interacting scalar fields
DTSTART;VALUE=DATE-TIME:20261119T080200Z
DTEND;VALUE=DATE-TIME:20261119T080400Z
DTSTAMP;VALUE=DATE-TIME:20261026T170156Z
UID:indico-contribution-957@indico.narit.or.th
DESCRIPTION:Speakers: Akshara S B (VELLORE INSTITUTE OF TECHNOLOGY\, VELLO
 RE)\nThe accelerated expansion of the Universe poses a serious challenge t
 o our understanding about the dark sector\, motivating the investigation o
 f dark matter and dark energy within a unified framework. In this work\, w
 e deal with the analysis of two-interacting scalar field model inspired by
  the hybrid inflation potential. We initially perform the cosmographic rec
 onstruction of the Hubble parameter utilising a modified parametrisation w
 hich is constrained by the Bayesian Markov Chain Monte Carlo (MCMC) method
 . The cosmographic parameters are estimated using the Observational Hubble
  Data\, Baryon Acoustic Oscillation\, Type Ia Supernovae\, Cosmic Microwav
 e Background\, Cosmic Chronometers and Dark Energy Spectroscopic Instrumen
 t data. The reconstructed Hubble parameter is used as an input to numerica
 lly solve the coupled scalar field equations\, analysing the evolution of 
 the interacting scalar fields. The reconstructed scalar field dynamics are
  then utilised to explore the dark energy equation of state. Further\, the
  evolution of deceleration\, jerk and snap parameters are also studied to 
 understand the cosmological aspects of the model. This work demonstrates a
  cosmographic approach in connecting the observational constraints with in
 teracting scalar field dynamics\, paving a way for understanding the unifi
 ed dark energy models.\n\nhttps://indico.narit.or.th/event/234/contributio
 ns/957/
LOCATION:Pattaya\, Thailand D Varee Jomtien Beach Pattaya Hotel
URL:https://indico.narit.or.th/event/234/contributions/957/
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