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        Topological G 2 and Spin(7) strings at 1-loop from double complexes

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        Author
        Ashmore, Anthony
        Coimbra, André
        Strickland-Constable, Charles
        Svanes, Eirik Eik
        Tennyson, David
        Attention
        2299/25535
        Abstract
        We study the topological G2 and Spin(7) strings at 1-loop. We define new double complexes for supersymmetric NSNS backgrounds of string theory using generalised geometry. The 1-loop partition function then has a target-space interpretation as a particular alternating product of determinants of Laplacians, which we have dubbed the analytic torsion. In the case without flux where these backgrounds have special holonomy, we reproduce the worldsheet calculation of the G2 string and give a new prediction for the Spin(7) string. We also comment on connections with topological strings on Calabi-Yau and K3 backgrounds.
        Publication date
        2022-02-11
        Published in
        Journal of High Energy Physics
        Published version
        https://doi.org/10.1007/jhep02(2022)089
        License
        http://creativecommons.org/licenses/by/4.0/
        Other links
        http://hdl.handle.net/2299/25535
        Relations
        School of Physics, Engineering & Computer Science
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