COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Theoretical Physics Colloquium > Integrability and action-angle variables for eccentric, spinning black-hole binaries in post-Newtonian theory

## Integrability and action-angle variables for eccentric, spinning black-hole binaries in post-Newtonian theoryAdd to your list(s) Download to your calendar using vCal - Dr. Leo Stein, The University of Mississippi
- Wednesday 26 January 2022, 14:00-15:00
- ONLINE - Details to be sent by email.
If you have a question about this talk, please contact Bipasha Chakraborty. Note unusual time Accurate gravitational waveforms are necessary for LIGO and LISA sources, and especially for the prospect of multi-band gravitational wave observations. Computing these waveforms accurately is expensive because of the complicated precession dynamics over a very large number of orbits. The most complicated scenario is an eccentric binary where both spins and the orbital plane are precessing. Current state-of-the-art waveform models rely on analytical approximations like orbit averaging and a small-eccentricity expansion. I will present work towards avoiding these approximations by exploiting integrability of the Hamiltonian dynamics of eccentric, spinning black hole binaries. Integrability lets us construct action-angle variables, which make the evolution very simple for arbitrarily long times. I will present how to construct the action integrals (involving lifting via a momentum map) and angle variables at 1.5PN. And while post-Newtonian corrections break integrability, we can recover it in a perturbative sense. I will also present explicit (perturbative) constants of motion at 2PN order, and the method that we used to find them. (Based on 2012.06586 and 2110.15351) This talk is part of the Theoretical Physics Colloquium series. ## This talk is included in these lists:- All CMS events
- All Talks (aka the CURE list)
- CMS Events
- Cambridge Astronomy Talks
- Cosmology lists
- Cosmology, Astrophysics and General Relativity
- DAMTP info aggregator
- HEP web page aggregator
- Interested Talks
- Kavli Institute for Cosmology Talk Lists
- ONLINE - Details to be sent by email
- Priscilla
- Theoretical Physics Colloquium
- bld31
Note that ex-directory lists are not shown. |
## Other listsStatistical Methods for Cognitive Psychologists South Africa Mp3 Download Let cout in## Other talksZoom Room Opens The Eccentric Kozai Mechanism and its Application to Boyajian’s Star Post-dissident Liberalism as Politics and Culture: East-Central Europe after 1989 In Focus seminars at CEB: Eleni Stavrinidou Linköping University How to Conduct your own Predictive Simulations of Biomechanical Models Under the Surface: X-ray Imaging in the British Museum |