Spontaneously Broken Space-Time Supersymmetry in Open String Theory
  without GSO Projection

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Abstract

We argue that orientable open string theory without GSO projection has N=2 space-time supersymmetry in a spontaneously broken phase. The arguments are presented both in Neveu-Schwarz-Ramond and Green-Schwarz formulations. The formal but explicit supersymmetry transformation law for string field is given in the framework of Witten's open string field theory. Our results support a fundamental assumption which lies behind the topological construction of stable D-branes starting from the unstable systems of D9-branes.

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Dirichlet-Branes and Ramond-Ramond Charges

Joseph Polchinski (1995)

We show that Dirichlet-branes, extended objects defined by mixed Dirichlet-Neumann boundary conditions in string theory, break half of the supersymmetries of the type~II superstring and carry a complete set of electric and magnetic Ramond-Ramond charges. We also find that the product of the electric and magnetic charges is a single Dirac unit, and that the quantum of charge takes the value required by string duality. This is strong evidence that the Dirchlet-branes are intrinsic to type II string theory and are the Ramond-Ramond sources required by string duality. We also note the existence of a previously overlooked 9-form potential in the IIa string, which gives rise to an effective cosmological constant of undetermined magnitude.

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General mass formula in broken supersymmetry

S. Ferrara, L. Girardello, F. Palumbo (1979)

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Purely Cubic Action for String Field Theory

Gary T. Horowitz, Joseph D. Lykken, Ryan Rohm … (1986)

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Author and article information

Journal

Publication date Created: 27 December 1999

Publication date Updated: 2001-03-29

Article

DOI: 10.1016/S0550-3213(00)00108-5

ArXiV ID: hep-th/9912255

SO-VID: 8c036936-82a8-4834-a8cf-3a87be7211a5

History

Custom metadata

Report No UT-KOMABA/99-20

Journal reference Nucl.Phys. B576 (2000) 219-240

Comments 29 pages, no figures, references are added, further typos of pulished version are corrected

Categories hep-th

ScienceOpen disciplines: High energy & Particle physics

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ScienceOpen disciplines: High energy & Particle physics

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