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Zvi Bern
Colloquium: From Quantum Scattering Amplitudes to Gravitational Waves
Add to Calendar 2023-03-30T19:45:00 2023-03-30T20:45:00 UTC Colloquium: From Quantum Scattering Amplitudes to Gravitational Waves

101 Osmond Laboratory and Zoom:

Osmond Laboratory
Start DateThu, Mar 30, 2023
3:45 PM
End DateThu, Mar 30, 2023
4:45 PM
Presented By
Zvi Bern, UCLA
Event Series: Physics Colloquium

The remarkable detection of gravitational waves by the LIGO/Virgo collaboration has opened a new window into the cosmos.  In this colloquium we explain how particle theorists can help out withcalculations directly relevant for gravitational-wave emission fromcompact astrophysical objects.  The past decade has seen enormous advances in our ability to compute quantum scattering amplitudes making seemingly impossible calculations tractable. These advances
include ideas such as the duality between color and kinematics, double-copy relations, generalized unitarity, and improved integration methods. The starting point in this approach is that gravity is transmitted by a massless spin 2 particle.  After introducing these concepts, we explain how these ideas are transferred to produce new state-of-the-art calculations for the astrophysical binary black hole inspiral problem.