With an aim towards understanding the time-dependence of entanglement entropy in
generic quantum field theories, we propose a covariant generalization of the holographic …

A bstract We consider soliton solutions in AdS 4 with a flat slicing and Wilson loops around
one cycle. We study the phase structure and find the ground state and identify …

Recent observations suggest that the cosmological equation-of-state parameter w is close to-
1. To say this is to imply that w could be slightly less than-1, which leads to R …

We study the conjectured connection between AdS bubbles (AdS solitons) and closed string
tachyon condensations. We confirm that the entanglement entropy, which measures the …

The moduli of N= 1 compactifications of IIB string theory can be stabilized by a combination
of fluxes (which freeze complex structure moduli and the dilaton) and nonperturbative …

We explore a classical instability of spacetimes of dimension D> 4. First, we consider static
solutions: generalized black holes and brane world metrics. The dangerous mode is a …

We consider the holographic complexity conjectures for de-Sitter invariant states in a
quantum field theory on de Sitter space, dual to asymptotically anti-de Sitter geometries with …

We discuss a general iterative procedure for constructing time dependent solutions in open
string theory describing rolling of a generic tachyon field away from its maximum. These …

We study the anti–de Sitter/conformal field theory correspondence with boundary conditions
AdS 5× S 5/Z k, where the Z k acts freely but breaks all supersymmetry. While there are …

We study non-perturbative instabilities of AdS spacetime in General Relativity with a
cosmological constant in arbitrary dimensions. In this simple setup we explicitly construct a …