51 citations · 235 across the 14 of their papers we have counts for
14 papers
Chiral Carroll string near Schwarzschild black hole
Kedar S. Kolekar
We obtain the action for the chiral Carroll string moving in a curved string-Carroll target spacetime from a Carroll expansion, in powers of the speed of light , of the action f…
Hydrodynamics in the Carrollian regime
Kedar S. Kolekar, Taniya Mandal, Ashish Shukla +1
Carroll hydrodynamics arises in the limit of relativistic hydrodynamics. Instances of its relevance include the Bjorken and Gubser flow models of heavy-ion collisions, whe…
Strings near black holes are Carrollian -- Part II
Arjun Bagchi, Aritra Banerjee, Jelle Hartong +2
We study classical closed bosonic strings probing the near-horizon region of a non-extremal black hole and show that this corresponds to understanding string theory in the Carroll…
Strings near black holes are Carrollian
Arjun Bagchi, Aritra Banerjee, Jelle Hartong +3
We demonstrate that strings near the horizon of a Schwarzschild black hole, when viewed by a stationary observer at infinity, probe a string Carroll geometry, where the effective l…
Heavy-ion collisions, Gubser flow, and Carroll hydrodynamics
Arjun Bagchi, Kedar S. Kolekar, Taniya Mandal +1
Gubser flow provides an analytic model for describing the spacetime dynamics of the quark-gluon plasma produced in heavy-ion collisions. Along with boost and rotation invariance al…
Carrollian Origins of Bjorken Flow
Arjun Bagchi, Kedar S. Kolekar, Ashish Shukla
Bjorken flow is among the simplest models of fluids moving near the speed of light () while Carroll symmetry arises as a contraction of Poincaré group when . We show th…
Carroll covariant scalar fields in two dimensions
Arjun Bagchi, Aritra Banerjee, Sudipta Dutta +2
Conformal Carroll symmetry generically arises on null manifolds and is important for holography of asymptotically flat spacetimes, generic black hole horizons and tensionless strin…
Galilean Gauge Theories from Null Reductions
Arjun Bagchi, Rudranil Basu, Minhajul Islam +2
The procedure of null reduction provides a concrete way of constructing field theories with Galilean invariance. We use this to examine Galilean gauge theories, viz. Galilean elect…
BMS Field Theories and Weyl Anomaly
Arjun Bagchi, Sudipta Dutta, Kedar S. Kolekar +1
Two dimensional field theories with Bondi-Metzner-Sachs symmetry have been proposed as duals to asymptotically flat spacetimes in three dimensions. These field theories are natural…
N-level ghost-spins and entanglement
Dileep P. Jatkar, Kedar S. Kolekar, K. Narayan
Ghost-spins, 2-level spin-like variables with indefinite norm have been studied in previous work. Here we explore various -level generalizations of ghost-spins. First we discuss…
On holography from redux, renormalization group flows and -functions
Kedar S. Kolekar, K. Narayan
Extremal black branes upon compactification in the near horizon throat region are known to give rise to dilaton-gravity-matter theories. Away from the throat region, the ba…
dilaton gravity from reductions of some nonrelativistic theories
Kedar S. Kolekar, K. Narayan
We study dilaton-gravity theories in 2-dimensions obtained by dimensional reduction of higher dimensional nonrelativistic theories. Focussing on certain families of extremal charge…
Notes on hyperscaling violating Lifshitz and shear diffusion
Kedar S. Kolekar, Debangshu Mukherjee, K. Narayan
We explore in greater detail our investigations of shear diffusion in hyperscaling violating Lifshitz theories in arXiv:1604.05092 [hep-th]. This adapts and generalizes the membran…
Hyperscaling violation and the shear diffusion constant
Kedar S. Kolekar, Debangshu Mukherjee, K. Narayan
We consider holographic theories in bulk -dimensions with Lifshitz and hyperscaling violating exponents at finite temperature. By studying shear gravitational modes in…