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Decompactifications and massless D-branes in hybrid models

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Abstract

A method of determining the mass spectrum of BPS D-branes in any phase limit of a gauged linear sigma model is introduced. A ring associated to monodromy is defined and one considers K-theory to be a module over this ring. A simple but interesting class of hybrid models with Landau-Ginzburg fibres over \( {\mathbb{P}^n} \) are analyzed using special Kähler geometry and D-brane probes. In some cases the hybrid limit is an infinite distance in moduli space and corresponds to a decompactification. In other cases the hybrid limit isat a finite distance and acquires massless D-branes. An example studied appears to correspond to a novel theory of supergravity with an SU(2) gauge symmetry where the gauge and gravitational couplings are necessarily tied to each other.

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Authors and Affiliations

  1. Center for Geometry and Theoretical Physics, Duke University, Science Drive, Durham, NC, 27708-0318, U.S.A.

    Paul S. Aspinwall & M. Ronen Plesser

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  1. Paul S. Aspinwall
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  2. M. Ronen Plesser
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Correspondence to Paul S. Aspinwall.

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ArXiv ePrint: 0909.0252

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Aspinwall, P.S., Ronen Plesser, M. Decompactifications and massless D-branes in hybrid models. J. High Energ. Phys. 2010, 78 (2010). https://doi.org/10.1007/JHEP07(2010)078

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