Despite their consequential applications, certain aspects of metastable states of anti-branes in warped throats are not yet fully understood. In this poster, I will introduce the Kachru-Pearson-Verlinde (KPV) configuration, a frequently-discussed metastable configuration of anti-D3 branes at the tip of a Klebanov-Strassler throat, and briefly recap the decade-long discussions on its existence. I will present a new perturbative supergravity solution that captures the backreaction of a metastable state of anti-branes in the background of a particular modification of the Klebanov-Strassler throat in a long-wavelength approximation. Our solution, which has no unphysical singularities, describes how non-supersymmetric spherical NS5-branes with dissolved anti-D3 brane charge backreact in a fluxed throat geometry. I'll discuss how this perturbative solution, taken in conjunction with previous results, serves as strong evidence in favour of the existence of the KPV state.
The poster is based on a recent preprint [2112.04514] with Vasilis Niarchos. It is also greatly influenced by previous works [1812.01067] (PRL), [1904.13283] (JHEP), and [1912.04646] (JHEP) with Jay Armas, Vasilis Niarchos, Niels Obers, and Thomas Van Riet.
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