40 citations · 86 across the 8 of their papers we have counts for
8 papers
Interaction of Neutrinos with a Cosmological K-essence Scalar
Christopher S. Gauthier, Ryo Saotome, Ratindranath Akhoury
In this paper we study a novel means of coupling neutrinos to a Lorentz violating background k-essence field. We first look into the effect that k-essence has on the neutrino dispe…
Stationary Configurations Imply Shift Symmetry: No Bondi Accretion for Quintessence / k-Essence
Ratindranath Akhoury, Christopher S. Gauthier, Alexander Vikman
In this paper we show that, for general scalar fields, stationary configurations are possible for shift symmetric theories only. This symmetry with respect to constant translations…
Reconstructing Single Field Inflationary Actions From CMBR Data
Christopher S. Gauthier, Ratindranath Akhoury
This paper describes a general program for deriving the action of single field inflation models with nonstandard kinetic energy terms using CMBR power spectrum data. This method as…
Galactic Halos and Black Holes in Non-Canonical Scalar Field Theories
Ratindranath Akhoury, Christopher S. Gauthier
We consider static spherically symmetric solutions of a general scalar field theory with non-standard kinetic energy coupled to gravity with a view to explain dark matter halos as…
A Kaluza-Klein Model with Spontaneous Symmetry Breaking: Light-Particle Effective Action and its Compactification Scale Dependence
Ratindranath Akhoury, Christopher S. Gauthier
We investigate decoupling of heavy Kaluza-Klein modes in an Abelian Higgs model with space-time topologies and $\mathbb{R}^{3,1} \times S^{1}/\mathb…
Propagation Constraints and Classical Solutions in K-essence Like Theories
Ratindranath Akhoury, Christopher S. Gauthier
We consider two examples of solutions of the equations of motion of scalar field theories with higher derivatives. These are the cosmology of the rolling tachyon and static spheric…