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SUMMARY:The inertial mass density : Cosmology\, Post-Newtonian Physics\, a
 nd Galactic Kinematics
DTSTART;VALUE=DATE-TIME:20260917T122500Z
DTEND;VALUE=DATE-TIME:20260917T125000Z
DTSTAMP;VALUE=DATE-TIME:20261026T032938Z
UID:indico-contribution-31309@indico.ific.uv.es
DESCRIPTION:Speakers: Nihan Katirci (Dogus University)\nThe persistent 
  tension and the improved supernova–BAO consistency under dynamical dark
  energy after DESI DR2 motivate rethinking how dark energy evolution is pa
 rametrized. We formulate it directly through the inertial mass density (IM
 D)\, $\\rho+p$IMD\, and show that an IMD evolving from a negative to an
  equal positive constant toward z->0 can induce a past sign change in  
 itself\, with background constraints from SimpleMC and a full perturbative
  analysis using CAMB and COBAYA underway. We then turn to the face that co
 smology leaves dormant — the genuinely inertial role of IMD — in self-
 gravitating systems\, where at first post-Newtonian order the IMD acquires
  pressure and gravitational-self-energy contributions whose rescaling by t
 wo parameters breaks the strong equivalence principle. The resulting local
  effects\, a Nordtvedt effect and a non-conservation of momentum\, are sma
 ll enough to pass tight Solar-System and pulsar-timing tests\, yet the sam
 e corrections accumulate on large scales and reshape galactic kinematics a
 s an alternative to dark matter. In short\, we present IMD as a single\, f
 undamental variable connecting the dark sector across scales.\n\nhttps://i
 ndico.ific.uv.es/event/8160/contributions/31309/
LOCATION:
URL:https://indico.ific.uv.es/event/8160/contributions/31309/
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