182 citations · 739 across the 16 of their papers we have counts for
16 papers
Classical gravitational scattering with a massive scalar mediator
Birgitta Biendarra, Kays Haddad, Jan Plefka
We consider the classical scattering of two gravitating compact objects in the presence of a massive scalar mediator, providing a simple model of exotic phenomena. Through dimensio…
Gravitational wave scattering at : Murua construction and elliptics
Yilber Fabian Bautista, Mathias Driesse, Kays Haddad +1
We compute the amplitude for the scattering of a gravitational wave off of a spinless point particle at fourth order in Newton's constant, using the worldline quantum field theory…
Gravitational Wave Scattering in Spinless WQFT
Yilber Fabian Bautista, Mathias Driesse, Kays Haddad +1
We develop the computational framework for gravitational wave - black hole scattering in worldline quantum field theory (WQFT) without spin. Crucially, we prove on general grounds…
Unitarity and the On-Shell Action of Worldline Quantum Field Theory
Kays Haddad, Gustav Uhre Jakobsen, Gustav Mogull +1
We develop the on-shell action formalism within Worldline Quantum Field Theory (WQFT) to describe scattering of spinning compact bodies in General Relativity in the post-Minkowskia…
Spinning bodies in general relativity from bosonic worldline oscillators
Kays Haddad, Gustav Uhre Jakobsen, Gustav Mogull +1
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 worldli…
Leading-order gravitational radiation to all spin orders
Rafael Aoude, Kays Haddad, Carlo Heissenberg +1
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-M…
Classical gravitational scattering at
Rafael Aoude, Kays Haddad, Andreas Helset
We calculate the scattering of two rotating objects with the linear-in-curvature spin-induced multipoles of Kerr black holes at and all orders in the spins of bo…
Recursion in the classical limit and the neutron-star Compton amplitude
Kays Haddad
We study the compatibility of recursive techniques with the classical limit of scattering amplitudes through the construction of the classical Compton amplitude for general spinnin…
Classical gravitational spinning-spinless scattering at
Rafael Aoude, Kays Haddad, Andreas Helset
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 o…
Searching for Kerr in the 2PM amplitude
Rafael Aoude, Kays Haddad, Andreas Helset
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 o…
Exponentiation of the leading eikonal with spin
Kays Haddad
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…
Tidal effects for spinning particles
Rafael Aoude, Kays Haddad, Andreas Helset
Expanding on the recent derivation of tidal actions for scalar particles, we present here the action for a tidally deformed spin- particle. Focusing on operators containing tw…
Tidal effects in quantum field theory
Kays Haddad, Andreas Helset
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 scalar…
The double copy for heavy particles
Kays Haddad, Andreas Helset
We show how to double-copy Heavy Quark Effective Theory (HQET) to Heavy Black Hole Effective Theory (HBET) for spin . In particular, the double copy of spin- HQET with…
On-shell heavy particle effective theories
Rafael Aoude, Kays Haddad, Andreas Helset
We introduce on-shell variables for Heavy Particle Effective Theories (HPETs) with the goal of extending Heavy Black Hole Effective Theory to higher spins and of facilitating its a…
Heavy Black Hole Effective Theory
Poul H. Damgaard, Kays Haddad, Andreas Helset
We formulate an effective field theory describing large mass scalars and fermions minimally coupled to gravity. The operators of this effective field theory are organized in powers…