40 citations · 40 across the 1 of their papers we have counts for
4 papers
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…
Cosmological evolution of viable models in the generalized scalar-tensor theory
Shun Arai, Purnendu Karmakar, Atsushi Nishizawa
We investigate the parameter distributions of the viable generalized scalar-tensor theory with conventional dust matter after GW170817 in a model-independent way. We numerically co…
Hamiltonian analysis of mimetic scalar gravity revisited
Alexander Ganz, Purnendu Karmakar, Sabino Matarrese +1
We perform the Hamiltonian analysis of several mimetic gravity models and compare our results with those obtained previously by different authors. We verify that for healthy mimeti…
Gravity in mimetic scalar-tensor theories after GW170817
Alexander Ganz, Nicola Bartolo, Purnendu Karmakar +1
We derive the most general mimetic scalar-tensor theory assuming a healthy "seed" action and accounting for the constraints on the speed of gravitational-wave propagation arising f…