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SUMMARY:[IP2I seminar] T. Chehab (OCA\, Nice) - Review of Entangled Relati
 vity : from compact objects to cosmology
DTSTART:20261112T100000Z
DTEND:20261112T110000Z
DTSTAMP:20261028T033200Z
UID:indico-event-41109@indico.in2p3.fr
DESCRIPTION:Entangled Relativity is a non-linear reformulation of General 
 Relativity in which matter and spacetime are fundamentally inseparable. De
 spite its non-standard formulation\, General Relativity is recovered as a 
 limiting regime through an intrinsic decoupling mechanism originally ident
 ified in scalar-tensor theories.\nIn this talk\, we review recent developm
 ents in Entangled Relativity\, starting with its implications for high-den
 sity environments and then focusing on cosmology. A distinctive prediction
  of the theory is a variation of the Planck constant. As this variation is
  expected to be enhanced in high-density environments\, we discuss its pot
 ential signatures in white dwarfs\, neutron stars\, and binary systems\, a
 nd its possible constraints through electromagnetic and gravitational-wave
  observations. We also discuss its impact on thermal radiation\, as a vary
 ing Planck constant is expected to leave imprints on the Cosmic Microwave 
 Background.\nWe then turn to cosmology\, where Entangled Relativity has no
 n-trivial implications for dark matter\, neutrino masses\, and the variati
 on of Newton’s constant even in early Universe. We review the cosmologic
 al dynamics of the theory and present recent constraints obtained through 
 a Markov Chain Monte Carlo analysis using low-redshift data\, including 33
  measurements from cosmic chronometers and the Pantheon+SHOES compilation\
 , which contains 1\,701 Type Ia supernovae.\nTogether\, these results illu
 strate how Entangled Relativity could be tested across astrophysical and c
 osmological scales.\n\nhttps://indico.in2p3.fr/event/41109/
LOCATION:Dirac/RdC-Amphithéâtre (IP2I)
URL:https://indico.in2p3.fr/event/41109/
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