# Strings 2022

Jul 18 – 23, 2022
University of Vienna
Europe/Vienna timezone

## Nonlinear N=2 Supersymmetry and D2-brane Effective Actions

Not scheduled
20m
Audimax (University of Vienna)

### Audimax

#### University of Vienna

Universitätsring 1, 1010 Vienna, Austria

Yangrui Hu

### Description

D$p$-branes acquire effective nonlinear descriptions whose bosonic parts are related to the Born-Infeld action. This nonlinearity has been proven to be a consequence of the partial ${\cal N}=2\to{\cal N}=1$ supersymmetry breaking, originating from the solitonic nature of the branes. In this work, we focus on the effective descriptions of D2-branes, which play important roles in the Type IIA string theory. Using the Goldstone multiplet interpretation of the action, we construct a 3D superspace description which makes the first supersymmetry manifest and realizes the second, spontaneously broken, supersymmetry nonlinearly. We find that the role of the 3D Goldstone multiplet can be played by the vector or tensor multiplet which are related under a duality transformation.

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