Sangmin Lee, Seoul National University

Carlos Argaez Garcia, febrúar 19, 2020

  Math colloquium

Fyrirlesari: Sangmin Lee, Seoul National University

Titill: Complete 1st post-Minkowskian potential from scattering amplitudes.

Staðsetning: VHV-007 (Veröld)
Tími: Mánudagur 24.Janúar kl.10:00

Ágrip:

Building upon recent progress in applying amplitude techniques to perturbative general relativity, we propose a closed-form formula for the conservative Hamiltonian of a spinning binary system at the 1st post-Minkowskian order. It is applicable for general spinning bodies with arbitrary spin multipole moments. It is linear in gravitational constant by definition, but exact to all orders in momentum and spin expansions. At each spin order, our formula implies that the spin-dependence and momentum dependence factorize completely. We compare our formula to a similar one derived in 2017 from a spinning test-body near a Kerr black hole and find perfect agreement.