Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Bhattacharya, Ritabrata"'
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 a supersymmetric anti-de Sitter vacuum. We show this maximal supergrav
Externí odkaz:
http://arxiv.org/abs/2411.16837
Autor:
Bhattacharya, Ritabrata
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 prescription for choosing a section avoiding the spurious poles due to the pres
Externí odkaz:
http://arxiv.org/abs/2205.01323
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 can be analytically extended by simply adjoining convex combinations of
Externí odkaz:
http://arxiv.org/abs/2110.13215
Autor:
Bhattacharya, Ritabrata
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) phase. Even after projecting out the tachyon there are naive divergenc
Externí odkaz:
http://arxiv.org/abs/2103.13025
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 removing contributions of massless states -- have been shown to be analyt
Externí odkaz:
http://arxiv.org/abs/2009.03375
We study Big-Bang or -Crunch cosmological singularities in 2-dimensional dilaton-gravity-scalar theories, in general obtained by dimensional reduction of higher dimensional theories. The dilaton potential encodes information about the asymptotic data
Externí odkaz:
http://arxiv.org/abs/2006.09470
We study non-equilibrium dynamics in SYK models using quantum quench. We consider models with two, four, and higher fermion interactions ($q=2, 4$, and higher) and use two different types of quench protocol, which we call step and bump quenches. We a
Externí odkaz:
http://arxiv.org/abs/1811.06006
Publikováno v:
SciPost Phys. Core 4, 018 (2021)
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 behaviour. We explicitly compute fermion six-point function and extract t
Externí odkaz:
http://arxiv.org/abs/1810.13217
We study the SYK model with complex fermions, in the presence of an all-to-all $q$-body interaction, with a non-vanishing chemical potential. We find that, in the large $q$ limit, this model can be solved exactly and the corresponding Lyapunov expone
Externí odkaz:
http://arxiv.org/abs/1709.07613
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