Math @ Duke

Publications [#243303] of Paul S. Aspinwall
Papers Published
 Aspinwall, PS; Plesser, MR, Decompactifications and massless Dbranes in hybrid models,
Journal of High Energy Physics, vol. 2010 no. 7
(2010),
pp. 078, ISSN 11266708 [arXiv:0909.0252], [doi]
(last updated on 2018/10/16)
Abstract: A method of determining the mass spectrum of BPS Dbranes in any phase limit of a gauged linear sigma model is introduced. A ring associated to monodromy is defined and one considers Ktheory to be a module over this ring. A simple but interesting class of hybrid models with LandauGinzburg fibres over ℙ n are analyzed using special Kähler geometry and Dbrane 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 is at a finite distance and acquires massless Dbranes. 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. © SISSA 2010.


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