41 citations · 217 across the 26 of their papers we have counts for
26 papers
Minimally modified gravity with Laplacian auxiliary constraints and an inflationary realization
Jakkrit Sangtawee, Antonio De Felice, Khamphee Karwan
We construct a minimally modified gravity theory that propagates only two tensorial gravitational degrees of freedom around a spatially flat Friedmann--Lemaître--Robertson--Walker…
Spherical collapse and cluster number counts in DHOST theories that pass the constraints from gravitational waves
Sakdithut Jitpienka, Khamphee Karwan, David F. Mota
We investigate the spherical collapse model and the abundance of galaxy clusters in a class of degenerate higher-order scalar--tensor (DHOST) theories in which gravitational waves…
Cluster number counts in dark energy model with energy and momentum coupling to dark matter
Chattree Wongsangwal, Khamphee Karwan, Stharporn Sapa +1
The influences on the cluster number counts from the coupling between dark energy and dark matter with momentum transfer are investigated. We find that the extrapolated linear dens…
A Unified Dynamical Systems Framework for Cosmology in Gravity: Generic Features Beyond the Coincident Gauge
Jibitesh Dutta, Wompherdeiki Khyllep, Saikat Chakraborty +2
We present a unified dynamical systems framework for spatially flat FLRW cosmology in gravity, covering all three connection branches via a single set of Hubble-normalised v…
Reproducing CDM-like Solutions in Gravity: A Comprehensive Study Across All Connection Branches
Saikat Chakraborty, Jibitesh Dutta, Daniele Gregoris +2
Given the remarkable success of the CDM model in fitting various cosmological observations, a pertinent question in assessing the phenomenological viability of modified gravity…
Observational predictions of inflationary model in spatially covariant gravity with two tensorial degrees of freedom for gravity
Saikat Chakraborty, Khamphee Karwan, Jakkrit Sangtawee
We study the inflationary model constructed from a Spatially Covariant Gravity (SCG). The Lagrangian for the SCG in our consideration is expressed as the polynomial of irreducible…