1 citations · 1 across the 6 of their papers we have counts for
8 papers
Creation of the Universe in Lorentzian Classical Gravity
Avipsa Chakrabarti, Avik Chakraborty, Martín Molina +2
The singularity theorems and the past incompleteness of inflationary spacetimes suggest that the beginning of the Universe lies beyond the domain of semiclassical gravity. We show…
Dynamical entropy and thermodynamics of causal diamonds
Avik Chakraborty, Pratik K. Das, Manavendra Mahato
We study the dynamical entropy of causal diamonds using Wald-Zoupas charges and fluxes on their null boundaries. For a chosen boundary symplectic potential, the boost charge define…
Decoding multiway gravitational junctions in AdS in terms of holographic quantum maps
Avik Chakraborty, Tanay Kibe, Martín Molina +2
It has been shown that multiway junctions gluing copies of locally AdS spacetimes () can be described by strings obeying non-linear Nambu-Goto equations coup…
Renormalization of Einstein-Gauss-Bonnet AdS gravity
Giorgos Anastasiou, Ignacio J. Araya, Avik Chakraborty +2
The asymptotic analysis for the metric of a generic solution of Einstein-Gauss-Bonnet AdS theory is provided by solving the field equations in the Fefferman-Graham frame. Using sta…
Junctions, strings, clocks and gravitational memory in three dimensional dS space
Avik Chakraborty, Jewel Kumar Ghosh, Martín Molina +1
We show that non-trivial stringy excitations in Lorentzian three dimensional de Sitter spacetime can be created self-consistently from gravitational memory in the infinite past. In…
The degrees of freedom of multiway junctions in three dimensional gravity
Avik Chakraborty, Tanay Kibe, Martín Molina +2
We demonstrate that -way junctions in three dimensional gravity correspond to coupled strings each satisfying the Nambu-Goto equation in the smoothened background, and wit…
Decoding the string in terms of holographic quantum maps
Avik Chakraborty, Tanay Kibe, Martín Molina +2
It has recently been shown that the Nambu-Goto equation for a string emerges from the junction conditions in three-dimensional gravity. Holographically, gravitational junctions are…
Quasiparticle tunnelling in two coupled chiral SYK model
Avik Chakraborty, Manavendra Mahato
The chiral SYK model is a 1+1 dimensional generalisation of the Sachdev-Ye-Kitaev model with chiral Majorana fermions and homogeneous random interactions. In the large-N limit, the…