Outputs (99)

Supersymmetric solitons in gauged N $$ \mathcal{N} $$ = 8 supergravity (2023)
Journal Article
Anabalón, A., Gallerati, A., Ross, S., & Trigiante, M. (2023). Supersymmetric solitons in gauged N $$ \mathcal{N} $$ = 8 supergravity. Journal of High Energy Physics, 2023(2), Article 55. https://doi.org/10.1007/jhep02%282023%29055

We consider soliton solutions in AdS4 with a flat slicing and Wilson loops around one cycle. We study the phase structure and find the ground state and identify supersymmetric solutions as a function of the Wilson loops. We work in the context of a s... Read More about Supersymmetric solitons in gauged N $$ \mathcal{N} $$ = 8 supergravity.

Cosmologies inside hyperbolic black holes (2022)
Journal Article
Ross, S. F. (2022). Cosmologies inside hyperbolic black holes. Journal of High Energy Physics, 2022(11), Article 168. https://doi.org/10.1007/jhep11%282022%29168

Models with closed FRW cosmologies on the worldvolume of a constant-tension brane inside a black hole provide an interesting setup for studying cosmology holographically. However, in more than two worldvolume dimensions, there are limitations on such... Read More about Cosmologies inside hyperbolic black holes.

Going beyond ER=EPR in the SYK model (2022)
Journal Article
Berkooz, M., Brukner, N., Ross, S. F., & Watanabe, M. (2022). Going beyond ER=EPR in the SYK model. Journal of High Energy Physics, 2022(8), Article 51. https://doi.org/10.1007/jhep08%282022%29051

We discuss generalizations of the TFD to a density matrix on the doubled Hilbert space. We suggest that a semiclassical wormhole corresponds to a certain class of such density matrices, and specify how they are constructed. Different semi-classical p... Read More about Going beyond ER=EPR in the SYK model.

Constraints on cosmologies inside black holes (2022)
Journal Article
Fallows, S., & Ross, S. F. (2022). Constraints on cosmologies inside black holes. Journal of High Energy Physics, 2022(5), Article 094. https://doi.org/10.1007/jhep05%282022%29094

We study the construction of holographic models with closed FRW cosmologies on the worldvolume of a constant-tension brane inside a Schwarzschild-AdS black hole. In dimensions d > 2, having a smooth Euclidean solution where the brane does not self-in... Read More about Constraints on cosmologies inside black holes.

Towards traversable wormholes from force-free plasmas (2022)
Journal Article
Iqbal, N., & Ross, S. F. (2022). Towards traversable wormholes from force-free plasmas. SciPost Physics, 12(3), Article 086. https://doi.org/10.21468/scipostphys.12.3.086

The near-horizon region of magnetically charged black holes can have very strong magnetic fields. A useful low-energy effective theory for fluctuations of the fields, coupled to electrically charged particles, is force-free electrodynamics. The low e... Read More about Towards traversable wormholes from force-free plasmas.

Islands and mixed states in closed universes (2021)
Journal Article
Fallows, S., & Ross, S. F. (2021). Islands and mixed states in closed universes. Journal of High Energy Physics, 2021(7), Article 22. https://doi.org/10.1007/jhep07%282021%29022

We investigate the appearance of islands when a closed universe with gravity is entangled with a non-gravitating quantum system. We use braneworlds in three-dimensional multiboundary wormhole geometries as a model to explore what happens when the non... Read More about Islands and mixed states in closed universes.

Supersymmetric solitons and a degeneracy of solutions in AdS/CFT (2021)
Journal Article
Anabalón, A., & Ross, S. F. (2021). Supersymmetric solitons and a degeneracy of solutions in AdS/CFT. Journal of High Energy Physics, 2021(7), https://doi.org/10.1007/jhep07%282021%29015

We study Lorentzian supersymmetric configurations in D = 4 and D = 5 gauged N = 2 supergravity. We show that there are smooth 1/2 BPS solutions which are asymptotically AdS4 and AdS5 with a planar boundary, a compact spacelike direction and with a Wi... Read More about Supersymmetric solitons and a degeneracy of solutions in AdS/CFT.

Making near-extremal wormholes traversable (2020)
Journal Article
Fallows, S., & Ross, S. F. (2020). Making near-extremal wormholes traversable. Journal of High Energy Physics, 2020(12), Article 44. https://doi.org/10.1007/jhep12%282020%29044

We construct a traversable wormhole from a charged AdS black hole by adding a coupling between the two boundary theories. We investigate how the effect of this deformation behaves in the extremal limit of the black hole. The black holes have finite e... Read More about Making near-extremal wormholes traversable.

Spin structures and baby universes (2020)
Journal Article
Balasubramanian, V., Kar, A., Ross, S. F., & Ugajin, T. (2020). Spin structures and baby universes. Journal of High Energy Physics, 2020(9), Article 192. https://doi.org/10.1007/jhep09%282020%29192

We extend a 2d topological model of the gravitational path integral to include sums over spin structure, corresponding to Neveu-Schwarz (NS) or Ramond (R) boundary conditions for fermions. This path integral corresponds to a correlator of boundary cr... Read More about Spin structures and baby universes.

Complexity and typical microstates (2019)
Journal Article
Ross, S. F. (2019). Complexity and typical microstates. Physical Review D, 100(6), Article 066014. https://doi.org/10.1103/physrevd.100.066014

Typical black hole microstates in AdS=CFT were recently conjectured to have a geometrical dual with a smooth horizon and a portion of a second asymptotic region. I consider the application of the holographic complexity conjectures to this geometry. T... Read More about Complexity and typical microstates.