Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Alexander Ochirov"'
Autor:
Lucile Cangemi, Marco Chiodaroli, Henrik Johansson, Alexander Ochirov, Paolo Pichini, Evgeny Skvortsov
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-78 (2024)
Abstract We develop massive higher-spin theory as a framework for describing dynamics of rotating compact objects, such as Kerr black holes. In this paper, we explore gauge interactions up to quartic order and corresponding Compton amplitudes of high
Externí odkaz:
https://doaj.org/article/5cc34a51906e44e7ace5563e79fb6949
Autor:
Rafael Aoude, Alexander Ochirov
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-43 (2023)
Abstract We study gravitational absorption effects using effective on-shell scattering amplitudes. We develop an in-in probability-based framework involving plane- and partial-wave coherent states for the incoming wave to describe the interaction of
Externí odkaz:
https://doaj.org/article/13fb573a3ecd43209f0ebf871a9e62bf
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-38 (2022)
Abstract We explore the on-shell recursion for tree-level scattering amplitudes with massive spinning particles. Based on the factorization structure encoded in the same way by two different recursion relations, we conjecture an all-multiplicity form
Externí odkaz:
https://doaj.org/article/1cf1ae02f5eb4f15ba4f02d31dbb371b
Autor:
Rafael Aoude, Alexander Ochirov
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-42 (2021)
Abstract The quantum field-theoretic approach to classical observables due to Kosower, Maybee and O’Connell provides a rigorous pathway from on-shell scattering amplitudes to classical perturbation theory. In this paper, we promote this formalism t
Externí odkaz:
https://doaj.org/article/710bc920977b4ee7a5ce0c4c9f852850
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-27 (2021)
Abstract We show that the Newman-Janis shift property of the exact Kerr solution can be interpreted in terms of a worldsheet effective action. This holds both in gravity, and for the single-copy Kerr $$ \sqrt{\mathrm{Kerr}} $$ solution in electrodyna
Externí odkaz:
https://doaj.org/article/a6e5b6d74a424c4a9abbeea56b5adbee
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-44 (2020)
Abstract Using a careful choice of infrared (IR) subtraction scheme, we demonstrate cancellation of all terms with transcendental weights 0, 1, 2 from the finite part of the full-color two-loop four-gluon N $$ \mathcal{N} $$ = 2 supersymmetric QCD am
Externí odkaz:
https://doaj.org/article/65389598d1d64d109d565c8f01624362
Autor:
Alexander Ochirov, Ben Page
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-34 (2019)
Abstract Any loop QCD amplitude at full colour is constructed from kinematic and gauge-group building blocks. In a unitarity-based on-shell framework, both objects can be reconstructed from their respective counterparts in tree-level amplitudes. This
Externí odkaz:
https://doaj.org/article/6ad5ab2a1f21413fab040f11e74e23f1
Autor:
Henrik Johansson, Alexander Ochirov
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-45 (2019)
Abstract The duality between color and kinematics was originally observed for purely adjoint massless gauge theories, and later found to hold even after introducing massive fermionic and scalar matter in arbitrary gauge-group representations. Such a
Externí odkaz:
https://doaj.org/article/3282a1bf32774ed496ce3e5ea3c1d321
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-38 (2019)
Abstract We provide evidence that the classical scattering of two spinning black holes is controlled by the soft expansion of exchanged gravitons. We show how an exponentiation of Cachazo-Strominger soft factors, acting on massive higher-spin amplitu
Externí odkaz:
https://doaj.org/article/d951867ba1e74c3daf7d0f139559ea27
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-45 (2019)
Abstract We develop an iterative method for constructing four-dimensional generalized unitarity cuts in N $$ \mathcal{N} $$ = 2 supersymmetric Yang-Mills (SYM) theory coupled to fundamental matter hypermultiplets ( N $$ \mathcal{N} $$ = 2 SQCD). For
Externí odkaz:
https://doaj.org/article/c3f80b90f8244cfda5a592d47b102d7e