University of Cambridge > Talks.cam > HEP phenomenology joint Cavendish-DAMTP seminar > Mao Zeng - Gravitational waves and multi-loop scattering amplitudes

  Browse A-Z

Log in

Cambridge users (raven)details Other usersdetails No account?details

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

Mao Zeng - Gravitational waves and multi-loop scattering amplitudes

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Maeve Madigan.

Next-generation gravitational wave detectors require highly precise theoretical predictions for the dynamics of compact binary systems. In the initial inspiral phase where the black holes or neutron stars are far from each other, general relativity can be treated perturbatively. Solving Einstein’s equations classically is challenging due to the nonlinear nature of gravity. As an alternative, we achieve new advances by computing gauge-invariant scattering amplitudes in second-quantized Einstein gravity and taking appropriate classical limits. Our methods are particularly effective in obtaining results in the post-Minkowskian expansion, which expands in the gravitational coupling constant without a further expansion around small velocities. Novel results include conservative two-body dynamics through O(G4) without spin and through O(G3) with spin, as well as dissipative dynamics such as energy loss. A variety of modern methods for scattering amplitudes, including the double copy construction, generalized unitarity and loop integration methods developed in the context of collider physics, are harnessed to enable our calculations.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Sir Andrew Motion Visits Cambridge in War Poets Event Social Anthropology Research Associate Seminar Series Research Office Linked Events

Other talks

Deciphering Molecular and Cellular Dynamics of Invasive Growth Across Developmental Contexts Discussion group on robust estimation Learning Operators From Data; Applications to Inverse Problems and Constitutive Modeling - Bayesian Inversion and Surrogate Modeling Dysfunctional microglia: key players in the pathogenesis of brain diseases Contributed talk: Stability estimates for the optimal experimental design in Bayesian inverse problems Revisiting early Jewish-Christian relations
 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity