91 citations · 138 across the 13 of their papers we have counts for
12 papers · 1 filter
Doubly-scaled planar SYM & Carroll Holography
Arjun Bagchi, Prateksh Dhivakar, Alok Laddha +1
In their seminal paper, Okuda and Penedones (OP) put forward an intriguing proposal towards holography in asymptotically flat spacetimes (AFS). They showed that the flat space limi…
Carrollian holographic duals are non-local
Jordan Cotler, Prateksh Dhivakar, Kristan Jensen
Mapping the -matrix of a generic theory of flat space gravity coupled to matter to correlation functions of a putative Carrollian dual, we show that bulk interactions imply boun…
The Carrollian Kaleidoscope
Arjun Bagchi, Aritra Banerjee, Prateksh Dhivakar +2
The Carroll group arises in the vanishing speed of light limit of the Poincaré group and was initially discarded as just a mathematical curiosity. However, recent developments have…
A finite Carrollian critical point
Jordan Cotler, Prateksh Dhivakar, Kristan Jensen
We construct examples of renormalizable Carrollian theories with finite effective central charge and non-trivial dynamics. These include critical points that are not scale-invarian…
3D Stress Tensor for Gravity in 4D Flat Spacetime
Arjun Bagchi, Prateksh Dhivakar, Sudipta Dutta
Three dimensional (3d) Carrollian CFTs are potential co-dimension one holographic duals of 4d asymptotically flat spacetimes that live on the whole of the null boundary. In this pa…
Iyer-Wald ambiguities and gauge covariance of Entropy current in Higher derivative theories of gravity
Alokananda Kar, Prateksh Dhivakar, Shuvayu Roy +2
In [arXiv:2105.06455, arXiv:2206.04538], the authors have been able to argue for an ultra-local version of the second law of black hole mechanics, for arbitrary diffeomorphism inva…
Inflationary non-Gaussianities in alpha vacua and consistency with conformal symmetries
Arhum Ansari, Pinak Banerjee, Prateksh Dhivakar +2
We study the conformal invariance of inflationary non-Gaussianities associated with scalar fluctuations in a non-Bunch-Davies initial state, known as the -vacuum, in single-fiel…
Holography in Flat Spacetimes: the case for Carroll
Arjun Bagchi, Prateksh Dhivakar, Sudipta Dutta
We compare and contrast the two approaches of holography in asymptotically flat spacetimes, viz. the co-dimension two Celestial approach based on the Mellin transformation and the…
Entropy-current for dynamical black holes in Chern-Simons theories of gravity
Ishan Deo, Prateksh Dhivakar, Nilay Kundu
We construct an entropy current and establish a local version of the classical second law of thermodynamics for dynamical black holes in Chern-Simons (CS) theories of gravity. We w…
AdS Witten Diagrams to Carrollian Correlators
Arjun Bagchi, Prateksh Dhivakar, Sudipta Dutta
Carrollian Conformal Field Theories (CFTs) have been proposed as co-dimension one holographic duals to asymptotically flat spacetimes as opposed to Celestial CFTs which are co-dime…
Non-minimal coupling of scalar and gauge fields with gravity: an entropy current and linearized second law
Parthajit Biswas, Prateksh Dhivakar, Nilay Kundu
This work extends the proof of a local version of the linearized second law involving an entropy current with non-negative divergence by including the arbitrary non-minimal couplin…
An entropy current and the second law in higher derivative theories of gravity
Sayantani Bhattacharyya, Prateksh Dhivakar, Anirban Dinda +3
We construct a proof of the second law of thermodynamics in an arbitrary diffeomorphism invariant theory of gravity working within the approximation of linearized dynamical fluctua…