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arXiv · 1806.00430

Exotic Branes in Exceptional Field Theory: $E_{7(7)}$ and Beyond

David S. Berman·Edvard T. Musaev·Ray Otsuki
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Abstract

In recent years, it has been widely argued that the duality transformations of string and M-theory naturally imply the existence of so-called `exotic branes'---low codimension objects with highly non-perturbative tensions, scaling as $g_s^{\alpha}$ for $\alpha \leq -3$. We argue that their intimate link with these duality transformations make them an ideal object of study using the general framework of Double Field Theory (DFT) and Exceptional Field Theory (EFT)---collectively referred to as ExFT. Parallel to the theme of dualities, we also stress that these theories unify known solutions in string- and M-theory into a single solution under ExFT. We argue that not only is there a natural unifying description of the lowest codimension objects, many of these exotic states require this formalism as a consistent supergravity description does not exist.

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David S. Berman, Edvard T. Musaev, Ray Otsuki. 2018-06-01. Exotic Branes in Exceptional Field Theory: $E_{7(7)}$ and Beyond. https://doi.org/10.1007/jhep12(2018)053

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