Speaker
Ernø-Møller & Bliard
Date/Time
Date(s) - 03/07/2023
11:00 - 12:00
Location
IRIS Building, Room 1.221
On Monday the 03/07 we will have the following talks:
Speaker: Marie Ernø-Møller
Title: Higher order spin effects in the dynamics of compact object binaries
Abstract: With the observation of gravitational waves, astronomy has
entered a new era and the primary source for both ground-based and
space-based detectors are inspirals of compact object binaries such as
neutron starts and black holes.
Spin can lead to significant corrections to the orbital motion of the
compact binary, which results in modulations on the gravitational-wave
signal, and thus including the higher order spin effects in the
templates is important. Working with a version of WQFT where the role of
the spin carrier is played by bosonic oscillators, the aim is to compute
observables e.g. momentum impulse and spin kick in a post-Minkowskian
expansion to higher orders in spin than done previously.
Speaker: Gabriel Bliard
Title: All-loop results from perturbative analytic bootstrap.
In a certain limit, the correlator of operator insertions on the 1/2 BPS Wilson Line defect in ABJM can be solved to all orders in perturbation theory. This limit, the double scaling limit, is relevant when considering Out of Time Order Correlators (OTOC) and measures of chaos.
I will start by reminding the defect setup and the bootstrap process.I will then give a small introduction to the double scaling limit and OTOCs.
Finally, I will present the obtaining of the 20 loop results and the Borel resumming to find an analytic all-loop expression which matches analogous computations in the Literature.