Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Gabriele Travaglini"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-43 (2024)
Abstract We study the binary dynamics of two Kerr black holes with arbitrary spin vectors in the presence of parity-even and parity-odd cubic deformations of gravity. We first derive the tree-level Compton amplitudes for a Kerr black hole in cubic gr
Externí odkaz:
https://doaj.org/article/dcb1b37fae5547b7bedef257ff66c929
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-47 (2024)
Abstract We compute the classical tree-level five-point amplitude for the two-to-two scattering of spinning celestial objects with the emission of a graviton. Using this five-point amplitude, we then turn to the computation of the leading-order time-
Externí odkaz:
https://doaj.org/article/c56bddf002424d03be81a6383f2bb8d2
Autor:
Andreas Brandhuber, Graham R. Brown, Gang Chen, Stefano De Angelis, Joshua Gowdy, Gabriele Travaglini
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-71 (2023)
Abstract Using a heavy-mass effective field theory (HEFT), we study gravitational-wave emission in the scattering of two spinless black holes or neutron stars of arbitrary masses at next-to-leading order in the Post-Minkowskian expansion. We compute
Externí odkaz:
https://doaj.org/article/f979cd3f07c94f23b74deeb993d0406a
Autor:
Andreas Brandhuber, Graham R. Brown, Gang Chen, Joshua Gowdy, Gabriele Travaglini, Congkao Wen
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-45 (2022)
Abstract It was recently proposed that the kinematic algebra featuring in the colour-kinematics duality for scattering amplitudes in heavy-mass effective field theory (HEFT) and Yang-Mills theory is a quasi-shuffle Hopf algebra. The associated fusion
Externí odkaz:
https://doaj.org/article/38df071989254a29b68573933333b1e9
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-51 (2021)
Abstract We propose a method to compute the scattering angle for classical black hole scattering directly from two massive particle irreducible diagrams in a heavy-mass effective field theory approach to general relativity, without the need of subtra
Externí odkaz:
https://doaj.org/article/8aa16c218a1e4893a73af6d3b7face66
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-23 (2021)
Abstract We propose a new form of the colour-kinematics/double-copy duality for heavy-mass effective field theories, which we apply to construct compact expressions for tree amplitudes with heavy matter particles in Yang-Mills and in gravity to leadi
Externí odkaz:
https://doaj.org/article/4f90ad686b744c4c9aa50724f2a4589d
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-22 (2020)
Abstract Using modern amplitude techniques we compute the leading classical and quantum corrections to the gravitational potential between two massive scalars induced by adding cubic terms to Einstein gravity. We then study the scattering of massless
Externí odkaz:
https://doaj.org/article/fd2ba794afa04136ad0d77bd650cfb08
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-31 (2019)
Abstract We introduce a prescription to define form factor integrands at loop level in planar N = 4 $$ \mathcal{N}=4 $$ supersymmetric Yang-Mills theory. This relies on a periodic kinematic configuration that has been instrumental to describe form fa
Externí odkaz:
https://doaj.org/article/b38c71b40d984f54bcd292b3adfe40a8
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-34 (2019)
Abstract Form factors of the stress-tensor multiplet operator in N = 4 $$ \mathcal{N}=4 $$ supersymmetric Yang-Mills reveal surprisingly simple structures similar to those appearing in scattering amplitudes. In this paper we show that, as for the cas
Externí odkaz:
https://doaj.org/article/e67147b8cc3d47a68e06c69597a3dd5f
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 12, Pp 1-27 (2018)
Abstract The study of form factors has many phenomenologically interesting applications, one of which is Higgs plus gluon amplitudes in QCD. Through effective field theory techniques these are related to form factors of various operators of increasin
Externí odkaz:
https://doaj.org/article/52ca2fb4dafd4814ac6ac24eb40b3acd