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GSO projections via SPT phases

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arxiv 1908.04805 v1 pith:TJEIB67U submitted 2019-08-13 hep-th cond-mat.str-el

Justin Kaidi , Julio Parra-Martinez , Yuji Tachikawa This is my paper · ORCID
classification hep-thcond-mat.str-el
keywords choicephasespointtheretypeessentiallyprojectionstheories
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We point out that the choice of phases in GSO projections can be accounted for by a choice of fermionic SPT phases on the worldsheet of the string. This point of view not only easily explains why there are essentially two type II theories, but also predicts that there are unoriented type 0 theories labeled by n mod 8, and that there is an essentially unique choice of the type I worldsheet theory. We also discuss the relationship between this point of view and the K-theoretic classification of D-branes.

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Cited by 2 Pith papers

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  1. Anomalies and D-branes in the Dabholkar-Park background

    hep-th 2024-12 conditional novelty 6.0 of 10

    Stable D-branes in the Dabholkar-Park background are derived from world-sheet anomalies with boundary Majorana fermions, matching the known relative KR-theory classification and explaining its 4-fold periodicity.

  2. Genus 2 Superstring Chiral Measure From The 3-Dimensional Gelca-Hamilton TQFT

    hep-th 2024-11 conditional novelty 4.0 of 10

    Known one- and two-loop superstring chiral measures are restated as path integrals of the Gelca-Hamilton 3D TQFT over handlebodies, with modular transformations interpreted as bulk mapping class group moves.

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