29 citations · 158 across the 16 of their papers we have counts for
17 papers
Lessons from discrete light-cone quantization for physics at null infinity: Bosons in two dimensions
Glenn Barnich, Sucheta Majumdar, Simone Speziale +1
Motivated by issues in the context of asymptotically flat spacetimes at null infinity, we discuss in the simplest example of a massless scalar field in two dimensions several subtl…
Radiative Asymptotic Symmetries of 3D Einstein-Maxwell Theory
Jorrit Bosma, Marc Geiller, Sucheta Majumdar +1
We study the null asymptotic structure of Einstein-Maxwell theory in three-dimensional (3D) spacetimes. Although devoid of bulk gravitational degrees of freedom, the system admits…
BMS symmetry in gravity: Front form versus Instant form
Sudarshan Ananth, Sucheta Majumdar
In General Relativity, the allowed set of diffeomorphisms or gauge transformations at asymptotic infinity forms the BMS group, an infinite-dimensional extension of the Poincaré gro…
Residual gauge symmetry in light-cone electromagnetism
Sucheta Majumdar
We analyze the residual gauge freedom in light-cone electromagnetism in four dimensions. The standard boundary conditions involved in the so-called formalism, which contains…
Local supersymmetry and the square roots of Bondi-Metzner-Sachs supertranslations
Oscar Fuentealba, Marc Henneaux, Sucheta Majumdar +2
Super-BMS algebras -- also called BMS superalgebras -- are graded extensions of the BMS algebra. They can be of two different types: they can contain either a finite nu…
BMS algebra from residual gauge invariance in light-cone gravity
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
We analyze the residual gauge freedom in gravity, in four dimensions, in the light-cone gauge, in a formulation where unphysical fields are integrated out. By checking the invarian…
BMS algebra as an extension of the Poincaré symmetry in light-cone gravity
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
We analyze possible local extensions of the Poincaré symmetry in light-cone gravity in four dimensions. We use a formalism where we represent the algebra on the two physical degree…
Asymptotic structure of the Rarita-Schwinger theory in four spacetime dimensions at spatial infinity
Oscar Fuentealba, Marc Henneaux, Sucheta Majumdar +2
We investigate the asymptotic structure of the free Rarita-Schwinger theory in four spacetime dimensions at spatial infinity in the Hamiltonian formalism. We impose boundary condit…
Asymptotic structure of the Pauli-Fierz theory in four spacetime dimensions
Oscar Fuentealba, Marc Henneaux, Sucheta Majumdar +2
The asymptotic structure of the Pauli-Fierz theory at spatial infinity is investigated in four spacetime dimensions. Boundary conditions on the massless spin- field that are inv…
Ehlers symmetry in four dimensions
Sucheta Majumdar
Starting with the light-cone Hamiltonian for gravity, we perform a field redefinition that reveals a hidden symmetry in four dimensions, namely the Ehlers symmetry. The f…
A hidden symmetry in quantum gravity
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
The action integral contains more information than the equations of motion. We have previously shown that there are signs of an extended exceptional symmetry for N=8 supergravity i…
Maximal supergravity and the quest for finiteness
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
We show that N = 8 supergravity may possess an even larger symmetry than previously believed. Such an enhanced symmetry is needed to explain why this theory of gravity exhibits ult…
E in supergravity in four dimensions
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
We argue that supergravity in four dimensions exhibits an exceptional symmetry, enhanced from the known invariance. Our procedure to demonstrat…
Dual Superconformal Symmetry of Chern-Simons theory with Fundamental Matter at Large
Karthik Inbasekar, Sachin Jain, Sucheta Majumdar +5
Dual conformal symmetry and Yangian symmetry are symmetries of amplitudes that have aided the study of scattering amplitudes in highly supersymmetric theories like SYM…
Deriving spin-1 quartic interaction vertices from closure of the Poincaré algebra
Sudarshan Ananth, Aditya Kar, Sucheta Majumdar +1
We derive the quartic interaction vertex of pure Yang-Mills theory by demanding closure of the light-cone Poincaré algebra in four-dimensional Minkowski spacetime. This calculation…
Gravitation and quadratic forms
Sudarshan Ananth, Lars Brink, Sucheta Majumdar +2
The light-cone Hamiltonians describing both pure Yang-Mills and N=4 super Yang-Mills may be expressed as quadratic forms. Here, we show that this feature extends to theories of gra…
Exceptional versus superPoincaré algebra as the defining symmetry of maximal supergravity
Sudarshan Ananth, Lars Brink, Sucheta Majumdar
We describe how one may use either the superPoincaré algebra or the exceptional algebra to construct maximal supergravity theories in the light-cone formalism. The d=4 construction…