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Entropy and creation cold dark matter models
(2019-01-01)
Entropy is a fundamental concept from thermodynamics, and it can be used to study models in the context of the creation cold dark matter. A general feature of these models is that thermodynamic equilibrium is reached at ...
The warped dark sector
(2019-11-10)
Five-dimensional braneworld constructions in anti-de Sitter space naturally lead to dark sector scenarios in which parts of the dark sector vanish at high 4d momentum or temperature. In the language of modified gravity, ...
Radiative properties of the skin and haircoat of cattle and other animals
(Amer Soc Agricultural Engineers, 2014)
Dark matter from a radiative inverse seesaw majoron model
(Elsevier B.V., 2023-11-10)
We propose a Majoron-like extension of the Standard Model with an extra global U(1)X-symmetry where neutrino masses are generated through an inverse seesaw mechanism at the 1-loop level. In contrast to the tree-level inverse ...
Emergent Universe as an interaction in the dark sector
(World Scientific, 2017-09)
A cosmological scenario where dark matter interacts with a variable vacuum energy for a spatially flat Friedmann-Robertson-Walker (FRW) spacetime is proposed and analyzed to show that with a linear equation of state and a ...
Fermion masses and mixings and dark matter constraints in a model with radiative seesaw mechanism
(2018)
We formulate a predictive model of fermion masses and mixings based on a Delta(27) family symmetry. In the quark sector the model leads to the viable mixing inspired texture where the Cabibbo angle comes from the down quark ...
From inflation to dark energy through a dynamical Λ: an attempt at alleviating fundamental cosmic puzzles
(Singapura, 2014-04-10)
After decades of successful hot big-bang paradigm, cosmology still lacks a framework
in which the early inflationary phase of the universe smoothly matches the radiation
epoch and evolves to the present “quasi” de Sitter ...
Phenomenology of scotogenic scalar dark matter
(2020-10-01)
We reexamine the minimal Singlet + Triplet Scotogenic Model, where dark matter is the mediator of neutrino mass generation. We assume it to be a scalar WIMP, whose stability follows from the same Z2 symmetry that leads to ...
Combined constraints on deviations of dark energy from an ideal fluid from Euclid and Planck
(Oxford University Press, 2016)
Cosmological fluids are commonly assumed to be distributed in a spatially homogeneous way, while their internal properties are described by a perfect fluid. As such, they influence the Hubble expansion through their ...
Bounds on direct couplings of superheavy metastable particles to the inflaton field from ultra high energy cosmic ray events
(World Scientific Publ Co Pte LtdSingaporeSingapura, 2002)