518 citations · 3.6k across the 129 of their papers we have counts for
7 papers · 2 filters
Neutrino Condensate as Origin of Dark Energy
Jitesh R. Bhatt, Bipin R. Desai, Ernest Ma +2
We propose a new solution to the origin of dark energy. We suggest that it was created dynamically from the condensate of a singlet neutrino at a late epoch of the early Universe t…
Leptogenesis Bound on Spontaneous Symmetry Breaking of Global Lepton Number
Pei-Hong Gu, Utpal Sarkar
We propose a new class of leptogenesis bounds on the spontaneous symmetry breaking of global lepton number. These models have a generic feature of inducing new lepton number violat…
Common Origin of Visible and Dark Universe
Pei-Hong Gu, Utpal Sarkar
Dark matter, baryonic matter and dark energy have different properties but contribute comparable energy density to the present Universe. We point out that they may have a common or…
Visible and Dark Matter Genesis and Cosmic Positron/Electron Excesses
Pei-Hong Gu, Utpal Sarkar, Xinmin Zhang
Dark and baryonic matter contribute comparable energy density to the present Universe. The dark matter may also be responsible for the cosmic positron/electron excesses. We connect…
Double Type-II Seesaw, Baryon Asymmetry and Dark Matter for Cosmic e^\pm Excesses
Pei-Hong Gu, Hong-Jian He, Utpal Sarkar +1
We construct a new realization of type-II seesaw for neutrino masses and baryon asymmetry by extending the standard model with one light and two heavy singlet scalars besides one H…
Spontaneous Parity Violation in a Supersymmetric Left-Right Symmetric Model
Sudhanwa Patra, Anjishnu Sarkar, Utpal Sarkar +1
We propose a novel implementation of spontaneous parity breaking in supersymmetric left-right symmetric model, avoiding some of the problems encountered in previous studies. This i…
Annihilating Leptogenesis
Pei-Hong Gu, Utpal Sarkar
Leptogenesis is usually realized through decays of heavy particles. In this article we consider another possibility of generating a lepton asymmetry through annihilations of heavy…