Spacetime Supersymmetry in a nontrivial NS-NS Superstring Background

Details Spacetime Supersymmetry in a nontrivial NS-NS Superstring Background Spacetime Supersymmetry in a nontrivial NS-NS Superstring Background

2001-07-30

arxiv.org/abs/hep-th/0107260v2

Phys.Rev. D65 (2002) 046002

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, Latex. Published version

Scientific paper

10.1103/PhysRevD.65.046002

In this paper we consider superstring propagation in a nontrivial NS-NS background. We deform the world sheet stress tensor and supercurrent with an infinitesimal B_{\mu\nu} field. We construct the gauge-covariant super-Poincare generators in this background and show that the B_{\mu\nu} field spontaneously breaks spacetime supersymmetry. We find that the gauge-covariant spacetime momenta cease to commute with each other and with the spacetime supercharges. We construct a set of "magnetic" super-Poincare generators that are conserved for constant field strength H_{\mu\nu\lambda}, and show that these generators obey a "magnetic" extension of the ordinary supersymmetry algebra.

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