Closed tachyon solitons in type II string theory. Issue 9 (20th July 2015)

• Record Type: Journal Article
• Authors: García‐Etxebarria, Iñaki; Montero, Miguel; Uranga, Angel M.
• Is Part Of: Fortschritte der Physik. Volume 63:Issue 9/10(2015:Sep.)
• Page Start: 571
• Page End: 595
• Publication Date: 2015-07-20
• Subjects: Physics -- Periodicals; 530.05
• DOI: 10.1002/prop.201500029
• Languages: English
• ISSNs: 0015-8208

Abstract

Abstract : Type II theories can be described as the endpoint of closed string tachyon condensation in certain orbifolds of supercritical type 0 theories. In this paper, the authors study solitons of this closed string tachyon and analyze the nature of the resulting defects in critical type II theories. The solitons are classified by the real K‐ theory groups KO of bundles associated to pairs of supercritical dimensions. For real codimension 4 and 8, corresponding to KO(S 4 ) = Z and KO(S 8 ) = Z, the defects correspond to a gravitational instanton and a fundamental string, respectively. These ideas are applied to reinterpret the worldsheet GLSM, regarded as a supercritical theory on the ambient toric space with closed tachyon condensation onto the CY hypersurface. It is used to describe charged solitons under discrete isometries. Possible applications of supercritical strings to the physical interpretation of the matrix factorization description of F‐theory on singular spaces are suggested. Abstract : Type II theories can be described as the endpoint of closed string tachyon condensation in certain orbifolds of supercritical type 0 theories. In this paper, we study solitons of this closed string tachyon and analyze the nature of the resulting defects in critical type II theories. The solitons are classified by the real K‐theory groups KO of bundles associated to pairs of supercritical dimensions. For real codimension 4 and 8, corresponding to K O ( S 4 ) = Z and K O ( S 8 ) = Z, the defects correspond to a gravitational instanton and a fundamental string, respectively. We apply these ideas to reinterpret the worldsheet GLSM, regarded as a supercritical theory on the ambient toric space with closed tachyon condensation onto the CY hypersurface, and use it to describe charged solitons under discrete isometries. We also suggest the possible applications of supercritical strings to the physical interpretation of the matrix factorization description of F‐theory on singular spaces.