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- W3214566660 abstract "A bstract By fibering the duality between the E 8 × E 8 heterotic string on T 3 and M-theory on K3, we study heterotic duals of M-theory compactified on G 2 orbifolds of the form T 7 / $$ {mathbb{Z}}_2^3 $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msubsup> <mml:mi>ℤ</mml:mi> <mml:mn>2</mml:mn> <mml:mn>3</mml:mn> </mml:msubsup> </mml:math> . While the heterotic compactification space is straightforward, the description of the gauge bundle is subtle, involving the physics of point-like instantons on orbifold singularities. By comparing the gauge groups of the dual theories, we deduce behavior of a “half- G 2 ” limit, which is the M-theory analog of the stable degeneration limit of F-theory. The heterotic backgrounds exhibit point-like instantons that are localized on pairs of orbifold loci, similar to the “gauge-locking” phenomenon seen in Hořava-Witten compactifications. In this way, the geometry of the G 2 orbifold is translated to bundle data in the heterotic background. While the instanton configuration looks surprising from the perspective of the E 8 × E 8 heterotic string, it may be understood as T-dual Spin(32)/ℤ 2 instantons along with winding shifts originating in a dual Type I compactification." @default.
- W3214566660 created "2021-11-22" @default.
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- W3214566660 date "2021-11-10" @default.
- W3214566660 modified "2023-09-30" @default.
- W3214566660 title "Non-perturbative heterotic duals of M-theory on G2 orbifolds" @default.
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- W3214566660 doi "https://doi.org/10.1007/jhep11(2021)065" @default.
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