35 citations · 81 across the 8 of their papers we have counts for
6 papers · 1 filter
A note on gravity and fluid dynamic correspondence on a null hypersurface
Krishnakanta Bhattacharya, Sumit Dey, Bibhas Ranjan Majhi
In the extensive literature on fluid-gravity correspondence formulated on null hypersurfaces, the Carrollian and membrane paradigm approaches have predominantly employed a timelike…
Possible fluid interpretation and tidal force equation on a generic null hypersurface in Einstein-Cartan theory
Sumit Dey, Bibhas Ranjan Majhi
The dynamical evolution of the Hajicek -form is derived in Einstein-Cartan (EC) theory. We find that like Einstein theory of gravity, the evolution equation is related to a proj…
Kinematics and dynamics of null hypersurfaces in the Einstein-Cartan spacetime and related thermodynamic interpretation
Sumit Dey, Bibhas Ranjan Majhi
A general geometric construction of a generic null hypersurface in presence of torsion in the spacetime (Riemann-Cartan background), generated by a null vector , is being deve…
Thermodynamic structure of a generic null surface and the zeroth law in scalar-tensor theory
Sumit Dey, Krishnakanta Bhattacharya, Bibhas Ranjan Majhi
We show that the equation of motion of scalar-tensor theory acquires thermodynamic identity when projected on a generic null surface. The relevant projection is given by $E_{ab}l^a…
Covariant approach to the thermodynamic structure of a generic null surface
Sumit Dey, Bibhas Ranjan Majhi
We readdress the thermodynamic structure of geometrical relations on a generic null surface. Among three potential candidates, originated from different components of alon…
A general framework to study the extremal phase transition of black holes
Krishnakanta Bhattacharya, Sumit Dey, Bibhas Ranjan Majhi +1
We investigate the universality of some features for the extremal phase transition of black holes and unify all the approaches which have been applied in different spacetimes. Unli…