Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Das, Suruj Jyoti"'
We show that a pseudo-Nambu-Goldstone boson (pNGB) with an initial misalignment angle can drive successful spontaneous baryogenesis, and become a good dark matter candidate if the corresponding global symmetry is non-restored at high temperatures. Co
Externí odkaz:
http://arxiv.org/abs/2406.04180
We explore the possibility of %dynamically producing the observed matter-antimatter asymmetry of the Universe uniquely from the evaporation of primordial black holes (PBH) that are formed in an inflaton-dominated background. Considering the inflaton
Externí odkaz:
http://arxiv.org/abs/2403.05626
We study the role of an ultra-light primordial black hole (PBH) dominated phase on the generation of baryon asymmetry of the Universe (BAU) and dark matter (DM) in a type-I seesaw framework augmented by Peccei-Quinn (PQ) symmetry which solves the str
Externí odkaz:
http://arxiv.org/abs/2403.02401
We study the possibility of generating dark matter (DM) purely from ultra-light primordial black hole (PBH) evaporation with the latter being produced from a first order phase transition (FOPT) in the early Universe. If such ultra-light PBH leads to
Externí odkaz:
http://arxiv.org/abs/2401.12282
Motivated by the recent release of new results from five different pulsar timing array (PTA) experiments claiming to have found compelling evidence for primordial gravitational waves (GW) at nano-Hz frequencies, we consider the prospects of generatin
Externí odkaz:
http://arxiv.org/abs/2307.00537
Motivated by the recent release of new results from five different pulsar timing array (PTA) experiments claiming to have found compelling evidence for primordial gravitational waves (GW) at nano-Hz frequencies, we study the consequences for two popu
Externí odkaz:
http://arxiv.org/abs/2307.00656
We study the possibility of detecting dark radiation (DR) produced by a combination of interactions with the thermal bath and ultra-light primordial black hole (PBH) evaporation in the early universe. We show that the detection prospects via cosmic m
Externí odkaz:
http://arxiv.org/abs/2306.00067
We propose a novel framework where baryon asymmetry can arise due to forbidden decay of dark matter (DM) enabled by finite temperature effects in the early universe. In order to implement it in a realistic setup, we consider the DM to be a singlet Di
Externí odkaz:
http://arxiv.org/abs/2305.13367
We study the effect of an ultra-light primordial black hole (PBH) dominated phase on the gravitational wave (GW) spectrum generated by a cosmic string (CS) network formed as a result of a high-scale $U(1)$ symmetry breaking. A PBH-dominated phase lea
Externí odkaz:
http://arxiv.org/abs/2304.11844
We propose a mechanism for cogenesis of baryon and dark matter (DM) in the universe via the Affleck-Dine (AD) route. An AD field which breaks the lepton number symmetry, leads to the generation of lepton asymmetry by virtue of its cosmic evolution, w
Externí odkaz:
http://arxiv.org/abs/2212.04516