Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Haddad, Kays"'
Worldline quantum field theory (WQFT) has proven itself a powerful tool for classical two-body scattering calculations in general relativity. In this paper we develop a new worldline action involving bosonic oscillators, which enables the use of the
Externí odkaz:
http://arxiv.org/abs/2411.08176
Starting with on-shell amplitudes compatible with the scattering of Kerr black holes, we produce the gravitational waveform and memory effect including spin at their leading post-Minkowskian orders to all orders in the spins of both scattering object
Externí odkaz:
http://arxiv.org/abs/2310.05832
We calculate the scattering of two rotating objects with the linear-in-curvature spin-induced multipoles of Kerr black holes at $\mathcal{O}(G^2)$ and all orders in the spins of both objects. This is done including the complete set of contact terms p
Externí odkaz:
http://arxiv.org/abs/2304.13740
Autor:
Haddad, Kays
We study the compatibility of recursive techniques with the classical limit of scattering amplitudes through the construction of the classical Compton amplitude for general spinning compact objects. This is done using BCFW recursion on three-point am
Externí odkaz:
http://arxiv.org/abs/2303.02624
Making use of the recently-derived, all-spin, opposite-helicity Compton amplitude, we calculate the classical gravitational scattering amplitude for one spinning and one spinless object at $\mathcal{O}(G^{2})$ and all orders in spin. By construction,
Externí odkaz:
http://arxiv.org/abs/2205.02809
The classical scattering of spinning objects is well described by the spinor-helicity formalism for heavy particles. Using these variables, we derive spurious-pole-free, all-spin opposite-helicity Compton amplitudes (factorizing on physical poles to
Externí odkaz:
http://arxiv.org/abs/2203.06197
Autor:
Haddad, Kays
We initiate a study into the eikonal exponentiation of the amplitude in impact-parameter space when spinning particles are involved in the scattering. Considering the gravitational scattering of two spin-1/2 particles, we demonstrate that the leading
Externí odkaz:
http://arxiv.org/abs/2109.04427
Expanding on the recent derivation of tidal actions for scalar particles, we present here the action for a tidally deformed spin-$1/2$ particle. Focusing on operators containing two powers of the Weyl tensor, we combine the Hilbert series with an on-
Externí odkaz:
http://arxiv.org/abs/2012.05256
Autor:
Haddad, Kays, Helset, Andreas
We apply the Hilbert series to extend the gravitational action for a scalar field to a complete, non-redundant basis of higher-dimensional operators that is quadratic in the scalars and the Weyl tensor. Such an extension of the action fully describes
Externí odkaz:
http://arxiv.org/abs/2008.04920