"Protected couplings and BPS black holes," by Boris Pioline (CERN, Université Pierre-et-Marie-Curie)

Tuesday, June 20, 2017 - 4:00pm to 5:00pm
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Tuesday, June 20, 2017

Guest Speaker: Boris Pioline (CERN, Université Pierre-et-Marie-Curie)​ ​​

Talk Title: "Protected couplings and BPS black holes"


After compactification on a thermal circle, BPS black holes in dimension D yield BPS instantons in dimension D-1. Thus, BPS saturated couplings in the low energy effective action in dimension D-1 conveniently encode BPS black hole degeneracies. I will demonstrate this connection in the case of R^4 and D^4 R^4 couplings in string vacua with 32 supercharges, and F^4, D^2 F^4 couplings in string vacua with 16 supercharges, all of which can be deternined exactly using constraints from U-duality and supersymmetry. In particular, the D^2 F^4 couplings provide a new point of view on the celebrated DVV formula counting BPS dyons in D=4.

Event Attachments: 
PAB 4-330