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View article: Spinning Black Binaries in de Sitter space
Spinning Black Binaries in de Sitter space Open
We construct stationary, rotating black binaries in general relativity with a positive cosmological constant. We consider identical black holes with either aligned or anti-aligned spins. Both cases have less entropy than the corresponding …
View article: Static Black Binaries in de Sitter Space
Static Black Binaries in de Sitter Space Open
We construct the first four-dimensional multiple black hole solution of general relativity with a positive cosmological constant. The solution consists of two static black holes whose gravitational attraction is balanced by the cosmic expa…
View article: Holographic duals of evaporating black holes
Holographic duals of evaporating black holes Open
A bstract We describe the dynamical evaporation of a black hole as the classical evolution in time of a black hole in an Anti-de Sitter braneworld. A bulk black hole whose horizon intersects the brane yields the classical bulk dual of a bl…
View article: Superradiance and black resonator strings encounter helical black strings
Superradiance and black resonator strings encounter helical black strings Open
A bstract We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string. T…
View article: Static Black Binaries in de Sitter
Static Black Binaries in de Sitter Open
We construct the first four-dimensional multi-black hole solution of general relativity with a positive cosmological constant. The solution consists of two static black holes whose gravitational attraction is balanced by the cosmic expansi…
View article: Superradiance and black resonator strings encounter helical black strings
Superradiance and black resonator strings encounter helical black strings Open
We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string. The isometr…
View article: Holographic duals of evaporating black holes
Holographic duals of evaporating black holes Open
We describe the dynamical evaporation of a black hole as the classical evolution in time of a black hole in an Anti-de Sitter braneworld. A bulk black hole whose horizon intersects the brane yields the classical bulk dual of a black hole c…
View article: The large D effective theory of black strings in AdS
The large D effective theory of black strings in AdS Open
A bstract We study black strings/funnels and other black hole configurations in AdS that correspond to different phases of the dual CFT in black hole backgrounds, employing different approaches at large D . We assemble the phase diagram of…
View article: Gregory-Laflamme and Superradiance encounter Black Resonator Strings
Gregory-Laflamme and Superradiance encounter Black Resonator Strings Open
We construct novel black strings that are neither time-translation invariant, nor axisymmetric, nor translationally invariant in the string direction, but nevertheless have a helical Killing vector field. These solutions branch from the su…
View article: The large D effective theory of black strings in AdS
The large D effective theory of black strings in AdS Open
We study black strings/funnels and other black hole configurations in AdS that correspond to different phases of the dual CFT in black hole backgrounds, employing different approaches at large $D$. We assemble the phase diagram of uniform …
View article: Gregory-Laflamme encounters Superradiance
Gregory-Laflamme encounters Superradiance Open
We investigate the effect of superradiant scattering of gravitational perturbations on the stability of rotating black strings, focusing on the six dimensional equal-spinning Myers-Perry black string. We find that rapidly rotating black st…
View article: Superradiant instability of black resonators and geons
Superradiant instability of black resonators and geons Open
Black resonators and geons in global AdS are rapidly rotating, low-energy solutions with a helical Killing field. We study the linear mode stability of equal angular momenta, five-dimensional black resonators and geons under scalar, electr…
View article: Report on 1911.11145v1
Report on 1911.11145v1 Open
The BFSS matrix model provides an example of gauge-theory / gravity duality where the gauge theory is a model of ordinary quantum mechanics with no spatial subsystems.If there exists a general connection between areas and entropies in this…
View article: New islands of stability with double-trace deformations
New islands of stability with double-trace deformations Open
We assess the role of a resonant spectrum in the AdS instability, and\nquantify the extent to which breaking the resonant spectrum of AdS can restore\nstability. Specifically, we study non-collapsing `multi-oscillator' solutions\nin AdS un…
View article: Multioscillating Boson Stars
Multioscillating Boson Stars Open
We propose that stable boson stars generically fall within an infinite-parameter family of solutions that oscillate on any number of noncommensurate frequencies. We numerically construct two-frequency solutions and explore their parameter …
View article: Holographic Signatures of Critical Collapse
Holographic Signatures of Critical Collapse Open
Critical phenomena in gravitational collapse exhibit the universal features of self-similarity, critical scaling, and the appearance of a naked singularity. We study critical collapse in anti-de Sitter space, focusing on holographic field …
View article: Gravitating scalar stars in the large D limit
Gravitating scalar stars in the large D limit Open
A bstract We develop the large D limit of general relativity for spherically symmetric scalar fields in both asymptotically flat and asymptotically anti-de Sitter spaces. The leading order equations in the 1 /D expansion can be solved anal…
View article: Gravitating Scalars and Critical Collapse in the Large $D$ Limit
Gravitating Scalars and Critical Collapse in the Large $D$ Limit Open
We develop the large $D$ limit of general relativity for spherically symmetric scalar fields in both asymptotically flat and asymptotically anti-de Sitter spaces. The leading order equations in the $1/D$ expansion can be solved analyticall…
View article: Charting Islands of Stability with Multioscillators in anti–de Sitter space
Charting Islands of Stability with Multioscillators in anti–de Sitter space Open
We propose the existence of an infinite-parameter family of solutions in anti-de Sitter (AdS) that oscillate on any number of noncommensurate frequencies. Some of these solutions appear stable when perturbed, and we suggest that they can b…
View article: Collapse and Nonlinear Instability of AdS Space with Angular Momentum
Collapse and Nonlinear Instability of AdS Space with Angular Momentum Open
We present a numerical study of rotational dynamics in AdS_{5} with equal angular momenta in the presence of a complex doublet scalar field. We determine that the endpoint of gravitational collapse is a Myers-Perry black hole for high ener…
View article: Dissonant black droplets and black funnels
Dissonant black droplets and black funnels Open
A holographic field theory on a fixed black hole background has a gravitational dual represented by a black funnel or a black droplet. These states are 'detuned' when the temperature of the field theory near the horizon does not match the …
View article: Evidence for an electrifying violation of cosmic censorship
Evidence for an electrifying violation of cosmic censorship Open
We present a plausible counterexample to cosmic censorship in four\ndimensional Einstein-Maxwell theory with asymptotically anti-de Sitter boundary\nconditions. Smooth initial data evolves to a region of arbitrarily large\ncurvature that i…
View article: Numerical methods for finding stationary gravitational solutions
Numerical methods for finding stationary gravitational solutions Open
The wide applications of higher dimensional gravity and gauge/gravity duality have fuelled the search for new stationary solutions of the Einstein equation (possibly coupled to matter). In this topical review, we explain the mathematical f…