Zobrazeno 1 - 10
of 467
pro vyhledávání: '"Ruf, Michael"'
We introduce a constructive method for defining a global loop-integrand basis for scattering amplitudes, encompassing both planar and nonplanar contributions. Our approach utilizes a graph-based framework to establish a well-defined, non-redundant ba
Externí odkaz:
http://arxiv.org/abs/2408.06686
We resolve subtleties in calculating the post-Minksowskian dynamics of binary systems, as a spin expansion, from massive scattering amplitudes of fixed finite spin. In particular, the apparently ambiguous spin Casimir terms can be fully determined fr
Externí odkaz:
http://arxiv.org/abs/2407.19005
Autor:
Bern, Zvi, Herrmann, Enrico, Roiban, Radu, Ruf, Michael S., Smirnov, Alexander V., Smirnov, Vladimir A., Zeng, Mao
We compute the potential-graviton contribution to the scattering amplitude, the radial action, and the scattering angle of two extremal black holes in N = 8 supergravity at the fifth post-Minkowskian order to next-to-leading order in a large mass exp
Externí odkaz:
http://arxiv.org/abs/2406.01554
Autor:
Jones, Callum R. T., Ruf, Michael S.
We describe an approach to incorporating the physical effects of the absorption of energy by the event horizon of black holes in the scattering amplitudes based post-Minkowskian, point-particle effective description. Absorptive dynamics are incorpora
Externí odkaz:
http://arxiv.org/abs/2310.00069
Autor:
Bern, Zvi, Herrmann, Enrico, Roiban, Radu, Ruf, Michael S., Smirnov, Alexander V., Smirnov, Vladimir A., Zeng, Mao
We compute the potential-photon contributions to the classical relativistic scattering angle of two charged non-spinning bodies in electrodynamics through fifth order in the coupling. We use the scattering amplitudes framework, effective field theory
Externí odkaz:
http://arxiv.org/abs/2305.08981
Autor:
Barack, Leor, Bern, Zvi, Herrmann, Enrico, Long, Oliver, Parra-Martinez, Julio, Roiban, Radu, Ruf, Michael S., Shen, Chia-Hsien, Solon, Mikhail P., Teng, Fei, Zeng, Mao
Publikováno v:
Phys. Rev. D 108, 024025 (2023)
We compare numerical self-force results and analytical fourth-order post-Minkowskian (PM) calculations for hyperbolic-type scattering of a point-like particle carrying a scalar charge $Q$ off a Schwarzschild black hole, showing a remarkably good agre
Externí odkaz:
http://arxiv.org/abs/2304.09200
Publikováno v:
Phys. Rev. Lett. 130 (2023), 021601
We compute the conservative two-body Hamiltonian of a compact binary system with a spinning black hole through $\mathcal{O}(G^3)$ to all orders in velocity, including linear and quadratic spin terms. To obtain our results we calculate the classical l
Externí odkaz:
http://arxiv.org/abs/2205.07357
Autor:
Bern, Zvi, Parra-Martinez, Julio, Roiban, Radu, Ruf, Michael S., Shen, Chia-Hsien, Solon, Mikhail P., Zeng, Mao
We complete the calculation of conservative two-body scattering dynamics at fourth post-Minkowskian order, i.e. $O(G^4)$ and all orders in velocity, including radiative contributions corresponding to the tail effect in general relativity. As in previ
Externí odkaz:
http://arxiv.org/abs/2112.10750
We compute classical gravitational observables for the scattering of two spinless black holes in general relativity and $\mathcal N {=} 8$ supergravity in the formalism of Kosower, Maybee, and O'Connell (KMOC). We focus on the gravitational impulse w
Externí odkaz:
http://arxiv.org/abs/2104.03957