26–29 Sept 2017
DESY Hamburg
Europe/Berlin timezone

Are tiny gauge couplings out of the Swampland?

27 Sept 2017, 14:00
20m
Seminar room 1 (DESY Hamburg)

Seminar room 1

DESY Hamburg

Notkestrasse 85, 22607 Hamburg
String & Mathematical Physics Parallel Session: String & Mathematical Physics

Speaker

Miguel Montero (Utrecht)

Description

Consistency with quantum gravity and black hole physics puts significant constraints on low-energy effective field theories. In fact, most EFT’s do not satisfy these criteria, and are said to be in the “Swampland”. Most Swampland constraints remain conjectural, supported mainly by a plethora of stringy examples. In this talk I will discuss a rigorous example of a Swampland constraint, in the context of the AdS/CFT correspondence: A bound on the gauge coupling of any U(1) theory coupled to gravity in AdS space. This equivalent to a bound on the two-point coefficient of holographic large N theories. The same logic leads to a logarithmic bound involving the gauge coupling, the cutoff of the effective field theory, the AdS radius, and Planck’s mass.

Primary author

Presentation materials