"Recent progress on gravitational bremsstrahlung from transplanckian-energy collisions," by Gabriele Veneziano (Collège de France)

Date: 
Tuesday, January 17, 2017 - 4:00pm to 5:00pm
Series: 
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Tuesday, January 17, 2017
4-5PM

Guest Speaker: Gabriele Veneziano (Collège de France) 

Talk Title: "Recent progress on gravitational bremsstrahlung from transplanckian-energy collisions"

Abstract:

Computing gravitational bremsstrahlung from ultra-relativistic collisions has long been a challenging problem both analytically and numerically. I will report on progress made on this issue in the last couple of years and show how a purely classical treatment and a completely different S-matrix approach precisely agree (in the appropriate limit for the latter) to leading order in the gravitational deflection angle. I will also comment on a recent claim by Dvali et al. on the total graviton multiplicity in such collisions and end up with presenting some open problems.

Event Attachments: 
Location: 
PAB 4-330