A bstract We propose a holographic description of $$ \mathcal{N} $$ N = 4 super YangMills on the fourdimensional real projective space $$ \mathbbm{RP} $$ RP 4 . We first construct the dual background in the framework of fivedimensional $$ \mathcal{N} $$ N = 8 gauged supergravity, and then uplift it to a new onehalf BPS solution of type IIB supergravity. A salient feature of our solution is the presence of a bulk naked singularity whose local behavior resembles that of an O1 − plane in flat space.
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Bubble bag end: a bubbly resolution of curvature singularity
A bstract We construct a family of smooth charged bubbling solitons in $$ \mathbbm{M} $$ M 4 ×T 2 , fourdimensional Minkowski with a twotorus. The solitons are characterized by a degeneration pattern of the torus along a line in $$ \mathbbm{M} $$ M 4 defining a chain of topological cycles. They live in the same parameter regime as nonBPS nonextremal fourdimensional black holes, and are ultracompact with sizes ranging from miscroscopic to macroscopic scales. The sixdimensional framework can be embedded in type IIB supergravity where the solitons are identified with geometric transitions of nonBPS D1D5KKm bound states. Interestingly, the geometries admit a minimal surface that smoothly opens up to a bubbly end of space. Away from the solitons, the solutions are indistinguishable from a new class of singular geometries. By taking a limit of large number of bubbles, the soliton geometries can be matched arbitrarily close to the singular spacetimes. This provides the first classical resolution of a curvature singularity beyond the framework of supersymmetry and supergravity by blowing up topological cycles wrapped by fluxes at the vicinity of the singularity.
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 NSFPAR ID:
 10311174
 Date Published:
 Journal Name:
 Journal of High Energy Physics
 Volume:
 2021
 Issue:
 10
 ISSN:
 10298479
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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