"Scattering Amplitude Techniques for LIGO" by Zvi Bern (UCLA)

Tuesday, January 22, 2019 - 4:00pm to 5:00pm
TEP Seminar

We harnesses powerful tools from the modern amplitudes program, such as generalized unitarity and the double-copy construction, which relates gravity integrands to simpler gauge-theory expressions, to obtain scattering amplitudes in the classical limit. Adapting methods for integration and matching from effective field theory, we extract the conservative Hamiltonian for compact spinless binaries through the third post-Minkowskian order. This gives the most accurate two-body Hamiltonian to date.  These results are currently under study by the LIGO/Virgo collaboration to assess their impact on constructing templates for identifying gravitational wave events.


Event Attachments: 
PAB 4-330