Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Sucheta Majumdar"'
Lessons from discrete light-cone quantization for physics at null infinity: bosons in two dimensions
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-46 (2024)
Abstract Motivated by issues in the context of asymptotically flat spacetimes at null infinity, we discuss in the simplest example of a free massless scalar field in two dimensions several subtleties that arise when setting up the canonical formulati
Externí odkaz:
https://doaj.org/article/d4bfbed5d58746b5aad4cde5e107e837
Autor:
Sucheta Majumdar
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-23 (2023)
Abstract We analyze the residual gauge freedom in light-cone electromagnetism in four dimensions. The standard boundary conditions involved in the so-called lc 2 formalism, which contains only the two physical degrees of freedom, allow for a subset o
Externí odkaz:
https://doaj.org/article/53130dcab90043d5b958b93ce176e4d8
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-18 (2021)
Abstract 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 invariance of the light-cone Hamiltonian, we obtain a set of residual
Externí odkaz:
https://doaj.org/article/1557f5c5dc8e4238a1ec946b39b4ef0b
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-10 (2021)
Abstract 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 degrees of freedom, one with helicity 2 and the other with helicit
Externí odkaz:
https://doaj.org/article/f6f642b0ac454369908382f215ddd70d
Asymptotic structure of the Rarita-Schwinger theory in four spacetime dimensions at spatial infinity
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-33 (2021)
Abstract 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 conditions for the spin-3/2 field that are invariant under an infin
Externí odkaz:
https://doaj.org/article/ffb0b7d3716b43808c9a0eb2ea2445fd
Autor:
Karthik Inbasekar, Sachin Jain, Sucheta Majumdar, Pranjal Nayak, Turmoli Neogi, Ritam Sinha, Tarun Sharma, V Umesh
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 6, Pp 1-24 (2019)
Abstract Dual conformal symmetry and Yangian symmetry are symmetries of amplitudes that have aided the study of scattering amplitudes in highly supersymmetric theories like N $$ \mathcal{N} $$ = 4 SYM and ABJM. However, in general such symmetries are
Externí odkaz:
https://doaj.org/article/30a0179a184e46e99ac77928ebabf63b
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-13 (2018)
Abstract The action integral contains more information than the equations of motion. Since it is an integral, changes of the integration variables occasionally also expose symmetries more easily than working directly with the equations of motion. We
Externí odkaz:
https://doaj.org/article/9864035ef4bd4cc6874b768d52ba8a20
Publikováno v:
Nuclear Physics B, Vol 926, Iss C, Pp 11-19 (2018)
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 explicitly shows why structure constants must satisfy the Jacobi i
Externí odkaz:
https://doaj.org/article/13803ee7f1f94a20a83c2f90b6c30f33
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-15 (2018)
Abstract We argue that N=8 $$ \mathcal{N}=8 $$ supergravity in four dimensions exhibits an exceptional E 8(8) symmetry, enhanced from the known E 7(7) invariance. Our procedure to demonstrate this involves dimensional reduction of the N=8 $$ \mathcal
Externí odkaz:
https://doaj.org/article/731ecd2d5faa4b058fffcd8a5bd43e3c
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 3, Pp 1-17 (2017)
Abstract The light-cone Hamiltonians describing both pure ( N $$ \mathcal{N} $$ = 0) Yang-Mills and N $$ \mathcal{N} $$ = 4 super Yang-Mills may be expressed as quadratic forms. Here, we show that this feature extends to theories of gravity. We demon
Externí odkaz:
https://doaj.org/article/629f46e47d2247ed951cd52b339b2812