Abstract
We construct a two-parameter four-dimensional non-BPS NS-NS smooth microstate solution that asymptotes to flat spacetime with a linear dilaton in type II superstring theory. From the microscopic point of view, the background is made out of a certain number of decoupled (i.e. gs → 0) NS5 branes wrapping T3 × S1 × S1 with fundamental strings wrapping non-contractable cycles of S1 × S1 with integer momentum modes along them. We show that perturbative worldsheet theory in this background is given by a null-gauged WZW model. We also show that the consistency of the worldsheet theory imposes non-trivial constraints on the supergravity background.
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Acknowledgments
We thank I. Bena, J. de Boer, N. Čeplak, A. Giveon, A. Hashimoto, N. Kovensky, D. Kutasov, F. Larsen, E. Martinec, D. Turton, and N. Warner for useful discussions. We especially thank I. Bena for reading the manuscript and providing helpful insight and N. Čeplak for reading through the Introduction and providing helpful suggestions. The work of SC received funding under the Framework Program for Research and “Horizon 2020” innovation under the Marie Skłodowska-Curie grant agreement n° 945298. This work was supported in part by the FACCTS Program at the University of Chicago. SC would like to thank APCTP, Pohang for hospitality during part of this work. SDH would like to thank the hospitality of the University of Warsaw, Faculty of Physics during the completion of this work. The work of SDH is supported by ERC Grant 787320 — QBH Structure.
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Chakraborty, S., Hampton, S.D. A 4d non-BPS NS-NS microstate. J. High Energ. Phys. 2023, 99 (2023). https://doi.org/10.1007/JHEP09(2023)099
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DOI: https://doi.org/10.1007/JHEP09(2023)099