Non-supersymmetric branes

DOI10.1007/JHEP07(2020)189zbMATH Open1451.81334arXiv2004.13110OpenAlexW3099822995MaRDI QIDQ2215425

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Publication date: 11 December 2020

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Abstract: We discuss how to incorporate non-supersymmetric branes in compactifications of type II string theories. We particularly focus on flux compactifications on $SU(3)imesSU(3)$ structure manifolds to four dimensions, so that a linear $mathcalN=1$ supersymmetry is spontaneously broken by spacetime filling Dp-branes. Anti-Dp-branes are a very special subset of such branes but our analysis is generic. We show that the backreaction of non-supersymmetric branes can be incorporated into the standard 4d $mathcalN=1$ supergravity by including a nilpotent chiral multiplet. Supersymmetry in such setups is always spontaneously broken and non-linearly realized. In particular this means that, contrary to what was previously thought, brane supersymmetry breaking cannot be simply described by a D-term in 4d $mathcalN=1$ supergravity theories.

Full work available at URL: https://arxiv.org/abs/2004.13110

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