51 citations · 109 across the 11 of their papers we have counts for
12 papers
Maximal trombone supergravity from M5-branes and -flavoured class operator spectra
Ritabrata Bhattacharya, Abhay Katyal, Oscar Varela
We recently presented a new gauged supergravity involving the local trombone scaling symmetry. It arises by consistent truncation of M-theory on the internal…
Large- Torus Knots in Lens Spaces and Their Quiver Structure
Ritabrata Bhattacharya, Suvankar Dutta, Naman Pasari +1
We study torus knot invariants in the lens space within Chern--Simons theory. Using the surgery and modular description of lens spaces, we derive a general e…
Crossing symmetry including non planar diagrams in perturbative QFT
Ritabrata Bhattacharya
We venture a proof of crossing symmetry for non-planar diagrams in perturbative QFT. For the planar diagrams a proof of crossing is available in the literature and our method close…
Class superconformal indices from maximal supergravity
Ritabrata Bhattacharya, Abhay Katyal, Oscar Varela
We present a new gauging of maximal supergravity in five spacetime dimensions with gauge group containing ISO(5), involving the local scaling symmetry of the metric, and admitting…
Two loop mass renormalisation in heterotic string theory: NS states
Ritabrata Bhattacharya
In this work computation of the renormalised mass at two loop order for the NS sector of heterotic string theory is attempted. We first implement the vertical integration prescript…
Analyticity Domain for Off-shell Five-point Superstring Loop Amplitudes
Ritabrata Bhattacharya, Ratul Mahanta
In an earlier work arXiv:2009.0337, we showed that for arbitrary Feynman loop diagrams (with no massless internal propagators) in closed superstring field theory, a known domain ca…
Supercritical linear dilaton capping state using Interpolating functions
Ritabrata Bhattacharya
We consider time dependent backgrounds with a time-like linear dilaton which leads to a weakly coupled theory at asymptotic future known as the Supercritical Linear Dilaton (SCLD)…
Analyticity of Off-shell Green's Functions in Superstring Field Theory
Ritabrata Bhattacharya, Ratul Mahanta
We consider the off-shell momentum space Green's functions in closed superstring field theory. Recently in arXiv:1810.07197, the off-shell Green's functions -- after explicitly rem…
Cosmological singularities and 2-dimensional dilaton gravity
Ritabrata Bhattacharya, K. Narayan, Partha Paul
We study Big-Bang or -Crunch cosmological singularities in 2-dimensional dilaton-gravity-scalar theories, in general obtained by dimensional reduction of higher dimensional theorie…
Quantum Quenches and Thermalization in SYK models
Ritabrata Bhattacharya, Dileep P. Jatkar, Nilakash Sorokhaibam
We study non-equilibrium dynamics in SYK models using quantum quench. We consider models with two, four, and higher fermion interactions (, and higher) and use two differen…
Chaotic Correlation Functions with Complex Fermions
Ritabrata Bhattacharya, Dileep P. Jatkar, Arnab Kundu
We study correlation functions in the complex fermion SYK model. We focus, specifically, on the h = 2 mode which explicitly breaks conformal invariance and exhibits the chaotic beh…
SYK Model, Chaos and Conserved Charge
Ritabrata Bhattacharya, Subhroneel Chakrabarti, Dileep P. Jatkar +1
We study the SYK model with complex fermions, in the presence of an all-to-all -body interaction, with a non-vanishing chemical potential. We find that, in the large limit,…