22 citations · 56 across the 11 of their papers we have counts for
12 papers
Geometry of massive loops in gravitational scattering: Maximal cut, Riemann's bilinear relations and genus drop
Arpan Bhattacharyya, Saptaswa Ghosh
We study a representative two-loop family of worldline quantum field theory integrals relevant for classical gravitational scattering with a massive mediator and investigate the ge…
Krylov complexity and the growth of the black hole interior in 3D gravity
Arpan Bhattacharyya, Sounak Pal, Juan F. Pedraza
We investigate the growth of the black hole interior in three-dimensional gravity from the boundary theory. For the two-sided BTZ black hole, we propose a boundary reconstruction o…
On the resolution of categorical symmetries in (Non-) Unitary Rational CFTs
Arpan Bhattacharyya, Saptaswa Ghosh, Sounak Pal +1
We explore several aspects of categorical symmetry-resolved entanglement entropy (SREE) directly within two-dimensional rational conformal field theory (RCFT) (without invoking any…
Heterotic Footprints in Classical Gravity: PM dynamics from On-Shell soft amplitudes at one loop
Arpan Bhattacharyya, Saptaswa Ghosh, Ankit Mishra +1
We study classical scattering of charged black holes in Einstein-Maxwell-Dilaton (EMD) theory. Working in the classical (Post-Minkowskian) regime, we extract the conservative two-b…
Love beyond Einstein: Metric reconstruction and Love number in quadratic gravity using WEFT
Arpan Bhattacharyya, Saptaswa Ghosh, Naman Kumar +2
We study tidal Love numbers of static black holes in four-dimensional quadratic theory of gravity, extending the result of GR. We use worldline effective field theory (WEFT) method…
Comparative Study of Indicators of Chaos in the Closed and Open Dicke Model
Prasad Pawar, Arpan Bhattacharyya, B. Prasanna Venkatesh
The Dicke model, renowned for its superradiant quantum phase transition, also exhibits a transition from regular to chaotic dynamics. In this work, we provide a systematic, compara…
The Sky Remembers everything: Celestial amplitude, Shadow and OPE in quadratic EFT of gravity
Arpan Bhattacharyya, Saptaswa Ghosh, Sounak Pal
In this paper, we compute the celestial amplitude arising from higher curvature corrections to Einstein gravity, incorporating phase dressing. The inclusion of such corrections lea…
Finite cutoff JT gravity: Baby universes, Matrix dual, and (Krylov) Complexity
Arpan Bhattacharyya, Saptaswa Ghosh, Sounak Pal +1
In this paper, as an application of the `Complexity = Volume' proposal, we calculate the growth of the interior of a black hole at late times for finite cutoff JT gravity. Due to t…
3D supergravity from Virasoro TQFT: Gravitational partition function and Out-of-time-order correlator
Arpan Bhattacharyya, Saptaswa Ghosh, Poulami Nandi +1
In this paper, we compute the partition functions of SUGRA for different boundary topologies, i.e. punctured sphere and torus, using super-Virasoro TQFT. We use fus…
Bootstrapping spinning two body problem in dynamical Chern-Simons gravity using worldline QFT
Arpan Bhattacharyya, Debodirna Ghosh, Saptaswa Ghosh +1
In this paper, we compute the WQFT partition function, specifically the eikonal phase in a black hole scattering event in the dynamical Chern-Simons theory, using the techniques of…
Observables from classical black hole scattering in Scalar-Tensor theory of gravity from worldline quantum field theory
Arpan Bhattacharyya, Debodirna Ghosh, Saptaswa Ghosh +1
In this article, we compute the two observables, impulse and waveform, in a black hole scattering event for the Scalar-Tensor theory of gravity with a generic scalar potential usin…
Aspects of deformed Schwarzian: From gravity partition function to late-time spectral form factor
Arpan Bhattacharyya, Saptaswa Ghosh, Sounak Pal
In this paper, we investigate different thermodynamic properties of deformed Schwarzian theory and its different gravitational perspectives. First, we compute t…