Eventi e divulgazione

Seminari
Ott
6
Gio
Gravitational multipoles beyond, Bogdan Ganchev (Saclay University) @ 602 e online
Ott 6@11:00 am–12:00 pm

(Seminario di Fisica Teorica)
In this talk I consider gravitational mulipoles in 4D theories beyond pure Einstein gravity. For the Kerr black hole, the mutlipole moments are uniquely determined by the first mass and current multipoles, but this is not necessarily true beyond classical gravity, in string theory for example. We will look at the effects of higher-derivative corrections to the Kerr mutlipoles from an EFT point of view and discuss their viability as probes of corrections to the Kerr black hole. We will also discuss whether the richer structure of multipole moments in string theory, as compared to that of the Kerr black hole, can be used to pose constraints on corrections to General Relativity coming from string theory.

Per connettersi a zoom

Topic: Theory and Pheno seminars

https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271

Ott
13
Gio
Analytic bootstrap of mixed correlators in the O(n) CFT (Francesco Bertucci, Università di Pisa @ Aula 602 e online
Ott 13@11:00 am–12:00 pm

Conformal field theories have two main characteristics. First, they are important in the study of critical phenomena. Second, their rigid structure makes them suitable to test theoretical challenges and obtain general results. In this talk, I will describe some of their general features and see how physical data can be extracted using powerful theoretical tools. Specifically, I will focus on the study of the O(n) CFT in less than four dimensions, trying to systematize the study of four-point correlators. I will explain how to use the Lorentzian inversion formula to extract physical data in perturbation theory and discuss some interesting features and technical details which arise in the process.

Per connettersi a zoom

Topic: Theory and Pheno seminars

https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271


Seminari su Indico

Altri eventi