42 citations · 157 across the 19 of their papers we have counts for
20 papers
Generation and purification of excited spacetimes using Schwarzian derivative
Rakesh K Jha, Akhil U Nair, Prasant Samantray +1
In this article, we use the expression of the Schwarzian derivative to set up differential equations to find answers to three fundamental questions in the context of QFT in curved…
Four inequivalent paths to Thermality in Minkowski spacetime
Rakesh K Jha, Akhil U Nair, Prasant Samantray +1
We investigate thermal behaviour in quantum fields by analysing a hierarchy of null-shifted Rindler wedges in Minkowski spacetime. Starting from the Minkowski vacuum restricted to…
Selective Thermalization, Chiral Excitations, and a Case of Quantum Hair in the Presence of Event Horizons
Akhil U Nair, Rakesh K. Jha, Prasant Samantray +1
The Unruh effect is a well-understood phenomenon, where one considers a vacuum state of a quantum field in Minkowski spacetime, which appears to be thermally populated for a unifor…
On Aspects of Spontaneous Symmetry Breaking in Rindler and Anti-de Sitter spacetimes for the Linear Sigma Model
Pallab Basu, Haridev S R, Prasant Samantray
We investigate aspects of spontaneous breakdown of symmetry for symmetric linear sigma model in the background of Rindler and Anti-de Sitter spacetimes respectively. In the…
On the Observer Dependence of the Quantum Effective Potential
Pallab Basu, Haridev S R, Prasant Samantray
In this short paper, we investigate the consequences of observer dependence of the quantum effective potential for an interacting field theory. Specializing to dimensional Eu…
Test of Transitivity in Quantum Field theory using Rindler spacetime
Sashideep Gutti, Akhil U Nair, Prasant Samantray
We consider a massless scalar field in Minkowski spacetime in its vacuum state, and consider two Rindler wedges and in this space. is shifted to the ri…
Revisiting Vacuum Energy in Compact Spacetimes
S. R. Haridev, Prasant Samantray
We revisit the calculation of vacuum energy density in compact spacetimes. For the general case of compact spatial dimensions in dimensional Minkowski spacetime, we calcu…
Schwinger Effect in Compact Space
Prasant Samantray, Suprit Singh
We consider a theory of scalar QED on a spatially compact 1+1-dimensional spacetime. By considering a constant electric field pointing down the compact dimension, we compute the qu…
A Bound on Thermal Relativistic Correlators at Large Spacelike Momenta
Souvik Banerjee, Kyriakos Papadodimas, Suvrat Raju +2
We consider thermal Wightman correlators in a relativistic quantum field theory in the limit where the spatial momenta of the insertions become large while their frequencies stay f…
Schwinger Pair Production in Hot Anti-de Sitter Space
Prasant Samantray, Suprit Singh
We consider particle production in dimensional thermal Anti-de Sitter space under the influence of a constant electric field. The vacuum-persistence amplitude is given by a n…
Phase Transitions of a (Super) Quantum Mechanical Matrix Model with a Chemical Potential
Takehiro Azuma, Pallab Basu, Prasant Samantray
In this paper, we study the finite-temperature matrix quantum mechanics with chemical potential term linear in the single trace of U(N) matrices, via Monte Carlo simulation. In the…
Chaotic dynamics of strings in charged black hole backgrounds
Pallab Basu, Pankaj Chaturvedi, Prasant Samantray
We study the motion of a string in the background of Reissner-Nordstrom black hole, in both AdS as well as asymptotically flat spacetimes. We describe the phase space of this dynam…
Evolution of Temperature Fluctuation in a Thermal bath and, its implications in Hadronic and Heavy-Ion Collisions
Trambak Bhattacharya, Prakhar Garg, Raghunath Sahoo +1
The evolution equation for inhomogeneous and anisotropic temperature fluctuations inside a medium is derived within the ambit of Boltzmann Transport Equation. Also, taking some exi…
The Schwinger Mechanism in (Anti) de Sitter Spacetimes
Prasant Samantray
We present a short and novel derivation of the Schwinger mechanism for particle pair production in dimensional de Sitter and Anti de Sitter spacetimes. We work directly in th…
Time Evolution of Temperature Fluctuation in a Non-Equilibrated System
Trambak Bhattacharyya, Prakhar Garg, Raghunath Sahoo +1
The evolution equation for inhomogeneous and anisotropic temperature fluctuation inside a medium is derived within the ambit of Boltzmann Transport Equation (BTE) for a hot gas of…
Quantum Non-Barking Dogs
Sara Imari Walker, Paul C. W. Davies, Prasant Samantray +1
Quantum weak measurements with states both pre- and postselected offer a window into a hitherto neglected sector of quantum mechanics. A class of such systems involves time depende…
Conformal Symmetry, Rindler Space and The AdS/CFT Correspondence
Prasant Samantray, T. Padmanabhan
Field theories in black hole spacetimes undergo dimensional reduction near horizon (in the Rindler limit) to two dimensional conformal field theories. We investigate this enhanceme…
All the Stationary Vacuum States of De Sitter Space
Maulik Parikh, Prasant Samantray
We obtain all the stationary vacua of de Sitter space by classifying the inequivalent timelike isometries of the de Sitter group. Besides the static vacuum, de Sitter space also ad…
Rindler-AdS/CFT
Maulik Parikh, Prasant Samantray
In anti-de Sitter space a highly accelerating observer perceives a Rindler horizon. The two Rindler wedges in AdS_{d+1} are holographically dual to an entangled conformal field the…
Rotating Rindler-AdS Space
Maulik Parikh, Prasant Samantray, Erik Verlinde
If the Hamiltonian of a quantum field theory is taken to be a timelike isometry, the vacuum state remains empty for all time. We search for such stationary vacua in anti-de Sitter…