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Local Fluid Dynamical Entropy from Gravity (2008)
Journal Article
Bhattacharyya, S., Hubeny, V. E., Loganayagam, R., Mandal, G., Minwalla, S., Rangamani, M., & Reall, H. S. (2008). Local Fluid Dynamical Entropy from Gravity. Journal of High Energy Physics, 2008(06), Article 055. https://doi.org/10.1088/1126-6708/2008/06/055

Spacetime geometries dual to arbitrary fluid flows in strongly coupled = 4 super Yang Mills theory have recently been constructed perturbatively in the long wavelength limit. We demonstrate that these geometries all have regular event horizons, and d... Read More about Local Fluid Dynamical Entropy from Gravity.

Nonlinear Fluid Dynamics from Gravity (2008)
Journal Article
Bhattacharyya, S., Minwalla, S., Hubeny, V. E., & Rangamani, M. (2008). Nonlinear Fluid Dynamics from Gravity. Journal of High Energy Physics, 2008(02), Article 045. https://doi.org/10.1088/1126-6708/2008/02/045

Black branes in AdS5 appear in a four parameter family labeled by their velocity and temperature. Promoting these parameters to Goldstone modes or collective coordinate fields—arbitrary functions of the coordinates on the boundary of AdS5—we use Eins... Read More about Nonlinear Fluid Dynamics from Gravity.

A covariant holographic entanglement entropy proposal (2007)
Journal Article
Hubeny, V., Rangamani, M., & Takayanagi, T. (2007). A covariant holographic entanglement entropy proposal. Journal of High Energy Physics, 2007(07), https://doi.org/10.1088/1126-6708/2007/07/062

With an aim towards understanding the time-dependence of entanglement entropy in generic quantum field theories, we propose a covariant generalization of the holographic entanglement entropy proposal of hep-th/0603001. Apart from providing several ex... Read More about A covariant holographic entanglement entropy proposal.

Bulk-cone singularities & signatures of horizon formation in AdS/CFT (2007)
Journal Article
Hubeny, V. E., Liu, H., & Rangamani, M. (2007). Bulk-cone singularities & signatures of horizon formation in AdS/CFT. Journal of High Energy Physics, 2007(01), https://doi.org/10.1088/1126-6708/2007/01/009

We discuss the relation between singularities of correlation functions and causal properties of the bulk spacetime in the context of the AdS/CFT correspondence. In particular, we argue that the boundary field theory correlation functions are singular... Read More about Bulk-cone singularities & signatures of horizon formation in AdS/CFT.

Inflation in AdS/CFT (2006)
Journal Article
Freivogel, B., Hubeny, V. E., Maloney, A., Myers, R. C., Rangamani, M., & Shenker, S. (2006). Inflation in AdS/CFT. Journal of High Energy Physics, 2006(03), https://doi.org/10.1088/1126-6708/2006/03/007

We study the AdS/CFT correspondence as a probe of inflation. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vici... Read More about Inflation in AdS/CFT.

Causally pathological space-times are physically relevant (2005)
Journal Article
Hubeny, V. E., Rangamani, M., & Ross, S. F. (2005). Causally pathological space-times are physically relevant. International Journal of Modern Physics D, 14(12), 2227-2232. https://doi.org/10.1142/s0218271805007760

We argue that in the context of string theory, the usual restriction to globally hyperbolic space–times should be considerably relaxed. We exhibit an example of a space–time which only satisfies the causal condition, and so is arbitrarily close to ad... Read More about Causally pathological space-times are physically relevant.

Causal structures and holography (2005)
Journal Article
Hubeny, V. E., Rangamani, M., & Ross, S. F. (2005). Causal structures and holography. Journal of High Energy Physics, 2005(07), Article 037. https://doi.org/10.1088/1126-6708/2005/07/037

We explore the description of bulk causal structure in a dual field theory. We observe that in the spacetime dual to a spacelike non-commutative field theory, the causal structure in the boundary directions is modified asymptotically. We propose that... Read More about Causal structures and holography.

String-corrected black holes (2005)
Journal Article
Hubeny, V., Maloney, A., & Rangamani, M. (2005). String-corrected black holes. Journal of High Energy Physics, 2005(05), https://doi.org/10.1088/1126-6708/2005/05/035

We investigate the geometry of four dimensional black hole solutions in the presence of stringy higher curvature corrections to the low energy effective action. For certain supersymmetric two charge black holes these corrections drastically alter the... Read More about String-corrected black holes.

Comments on cosmic censorship in AdS/CFT (2004)
Journal Article
Hubeny, V. E., Liu, X., Rangamani, M., & Shenker, S. (2004). Comments on cosmic censorship in AdS/CFT. Journal of High Energy Physics, 2004(12), https://doi.org/10.1088/1126-6708/2004/12/067

Recently Hertog, Horowitz, and Maeda (HHM) [14] have proposed that cosmic censorship can be violated in the AdS/CFT context. They argue that for certain initial data there is insufficient energy available to make a black hole whose horizon is big eno... Read More about Comments on cosmic censorship in AdS/CFT.