51 citations · 261 across the 14 of their papers we have counts for
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Constraints on Logarithmic Model Extensions of Symmetric Teleparallel Gravity
Purnendu Karmakar, Sandeep Haridasu, Atsushi Nishizawa
We address various cosmological phenomenologies in the symmetric teleparallel framework both in background and perturbation such as cosmic expansion, gravitational coupling constan…
Generalised scalar-tensor theories of gravity and pressure profiles of galaxy clusters
Balakrishna S. Haridasu, Purnendu Karmakar, Marco De Petris +2
In the current proceedings, we summarise the results presented during the mm Universe@NIKA2 conference, taken from our main results in \cite{Haridasu:2021hzq}. We test the Degenera…
Testing generalized scalar-tensor theories of gravity with clusters of galaxies
Balakrishna S. Haridasu, Purnendu Karmakar, Marco De Petris +2
We test the generalized scalar-tensor theory in static systems, namely galaxy clusters. The Degenerate higher-order scalar-tensor (DHOST) theory modifies the Newtonian potential th…
Jointly fitting weak lensing, X-ray and Sunyaev-Zel'dovich data to constrain scalar-tensor theories with clusters of galaxies
Vincenzo F. Cardone, Purnendu Karmakar, Marco De Petris +1
Degenerate higher-order scalar-tensor (DHOST) theories are considered the most general class of scalar-tensor theories so that any constraints on them apply to the full set of scal…
Large-scale structure in mimetic Horndeski gravity
Frederico Arroja, Teppei Okumura, Nicola Bartolo +2
In this paper, we propose to use the mimetic Horndeski model as a model for the dark universe. Both cold dark matter (CDM) and dark energy (DE) phenomena are described by a single…
Cosmological Implications of Unimodular Gravity
Pankaj Jain, Atul Jaiswal, Purnendu Karmakar +2
We consider a model of gravity and matter fields which is invariant only under unimodular general coordinate transformations (GCT). The determinant of the metric is treated as a se…