Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Samantray, Prasant"'
We investigate aspects of spontaneous breakdown of symmetry for $O(N)$ symmetric linear sigma model in the background of Rindler and Anti-de Sitter spacetimes respectively. In the large $N$ limit, by computing the one-loop effective action, we report
Externí odkaz:
http://arxiv.org/abs/2303.04050
In this short paper, we investigate the consequences of observer dependence of the quantum effective potential for an interacting field theory. Specializing to $d+2$ dimensional Euclidean Rindler space, we develop the formalism to calculate the effec
Externí odkaz:
http://arxiv.org/abs/2303.04039
We consider a massless scalar field in Minkowski spacetime $\cal{M} $ in its vacuum state, and consider two Rindler wedges $R_1$ and $R_2$ in this space. $R_2$ is shifted to the right of $R_1$ by a distance $\Delta$. We therefore have $R_2\subset R_1
Externí odkaz:
http://arxiv.org/abs/2210.08925
Autor:
Haridev, S. R., Samantray, Prasant
We revisit the calculation of vacuum energy density in compact spacetimes. For the general case of $k$ compact spatial dimensions in $p+k$ dimensional Minkowski spacetime, we calculate the Casimir force on a piston placed in the presence of external
Externí odkaz:
http://arxiv.org/abs/2106.12171
Autor:
Samantray, Prasant, Singh, Suprit
Publikováno v:
Phys. Rev. D 103, 125012 (2021)
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 quantum effective action by integrating out the scalar degrees of freedo
Externí odkaz:
http://arxiv.org/abs/2010.13453
Autor:
Banerjee, Souvik, Papadodimas, Kyriakos, Raju, Suvrat, Samantray, Prasant, Shrivastava, Pushkal
Publikováno v:
SciPost Phys. 8, 064 (2020)
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 fixed. We show that, in this limit, the size of these correlators is bo
Externí odkaz:
http://arxiv.org/abs/1902.07203
Autor:
Samantray, Prasant, Singh, Suprit
Publikováno v:
Phys. Rev. D 99, 085006 (2019)
We consider particle production in $1+1$ dimensional thermal Anti-de Sitter space under the influence of a constant electric field. The vacuum-persistence amplitude is given by a non-relativistic tunnelling instanton once we interpret the system as b
Externí odkaz:
http://arxiv.org/abs/1804.04140
Publikováno v:
JHEP09(2017)071
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 bosonic case, we exhibit the existence of the Gross-Witten-Wadia (GWW
Externí odkaz:
http://arxiv.org/abs/1707.02898
Publikováno v:
Phys. Rev. D 95, 066014 (2017)
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 dynamical system through largest Lyapunov exponent, Poincare sections and b
Externí odkaz:
http://arxiv.org/abs/1607.04466
The evolution equation for inhomogeneous and anisotropic temperature fluctuations inside a medium is derived within the ambit of Boltzmann Transport Equation. Also, taking some existing realistic inputs we have analyzed the Fourier space variation of
Externí odkaz:
http://arxiv.org/abs/1603.04969