# SUSY10

Aug 23 – 28, 2010
Bonn
Europe/Berlin timezone

## DBI and Universal Hypermultiplet in N=2 Supersymmetry

Aug 24, 2010, 2:34 PM
15m
Hörsaal I (Bonn)

Nussallee 12

### Speaker

Dr Nicola Ambrosetti (University of Bern)

### Description

The effective action of string compactifications on Calabi-Yau manifolds can be described in 4d global N=2 supersymmetry in the gravity-decoupling limit. Adding D-branes brakes half of the supersymmetry, which is then nonlinearly realised on their worldvolume. I will describe the coupling of the DBI action for the D-brane gauge field to the Universal Hypermultiplet. Taking into account the Heisenberg symmetry of string perturbation theory uniquely fixes the form of the action, thus providing a consistent effective theory description of (the brane-dilaton sector of) string compactifications. The analysis of this system shows some interesting dynamics.

### Primary author

Dr Nicola Ambrosetti (University of Bern)

 Slides