542 citations · 6.9k across the 129 of their papers we have counts for
122 papers · 1 filter
Gravitational reheating at strong coupling
Alex Buchel
We use gauge/gravity correspondence to study the gravitational reheating of strongly coupled gauge theories in the rapid exit from the long inflationary (de Sitter) phase. We estim…
Hot Big Bang from inflation without the inflaton reheating
Alex Buchel
According to the standard lore, a prolonged inflation leaves a quantum field theory in a cold, low entropy state. Thus, some mechanism is needed to reheat this post-inflationary st…
Gravitational susceptibility of QGP
Alex Buchel
We use and cascading gauge theory holographic models to extract the general features of the gravitational susceptibility of strongly coupled nonconformal quark-g…
Stability of the cascading gauge theory de Sitter DFPs
Alex Buchel
We study stability of the Dynamical Fixed Points (DFPs) of the cascading gauge theory at strong coupling in de Sitter space-time. We compute the spectra of the perturbative fluctua…
Master equations for de Sitter DFPs
Alex Buchel
We develop master equations to study perturbative stability of de Sitter Dynamical Fixed Points (DFPs) of strongly coupled massive quantum field theories in space-time dimens…
The quest for a conifold conformal order
Alex Buchel
The holographic duality between cascading gauge theory and type IIB supergravity on warped deformed conifold with fluxes reveals exotic thermal phases with nonzero expectation valu…
Dynamical fixed points in holography
Alex Buchel
Typically, an interactive system evolves towards thermal equilibrium, with hydrodynamics representing a universal framework for its late-time dynamics. Classification of the dynami…
Compactified holographic conformal order
Alex Buchel
We study holographic conformal order compactified on . The corresponding boundary CFT has a thermal phase with a nonzero expectation value of a certain operator. The grav…
Stabilization of the extended horizons
Alex Buchel
We extend Kodama-Ishibashi and Jansen-Rostworowski-Rutkowski master field framework to study quasinormal modes of black branes and black holes of Einstein gravity in space-ti…
A bestiary of black holes on the conifold with fluxes
Alex Buchel
We present a comprehensive analysis of the black holes on warped deformed conifold with fluxes in Type IIB supergravity. These black holes realize the holographic dual to thermal s…
The fate of the conformal order
Alex Buchel
We use holographic correspondence to study transport of the conformal plasma in in a phase with a spontaneously broken global symmetry. The dual black bra…
SUGRA/Strings like to be bald
Alex Buchel
We explore the embedding of the phenomenological holographic models describing thermal relativistic ordered conformal phases in in SUGRA/String theory. The dual…
On branches of the KS black hole
Alex Buchel
The Klebanov-Strassler black hole is a holographic dual to supersymmetric cascading gauge theory plasma with spontaneously broken chiral symmetry…
Thermal order in holographic CFTs and no-hair theorem violation in black branes
Alex Buchel
We present a large class of holographic models where the boundary dimensional conformal field theory has a thermal phase with a spontaneously broken global symm…
of cascading gauge theory in de Sitter
Alex Buchel
supersymmetric cascading gauge theory of Klebanov et.al spontaneously breaks chiral symmetry in Minkowski space-time. We demonstrate that in de S…
Throat destabilization (for profit and for fun)
Iosif Bena, Alex Buchel, Severin Lüst
Two recent results indicate that the addition of supersymmetry-breaking ingredients can destabilize the Klebanov-Strassler warped deformed conifold throat. The first comes from an…
Entanglement entropy of de Sitter vacuum
Alex Buchel
de Sitter vacuum of nonconformal gauge theories is non-equilibrium, manifested by a nonvanishing rate of the comoving entropy production at asymptotically late times. This entropy…
Klebanov-Strassler black hole
Alex Buchel
We construct a black hole solution on warped deformed conifold in type IIB supergravity with fluxes. The black hole has translationary invariant horizon and is a holographic dual t…
Sensitivity of holographic SYM plasma hydrodynamics to finite coupling corrections
Alex Buchel
Gauge theory/string theory holographic correspondence for supersymmetric Yang-Mills theory is well under control in the planar limit, and for large (infinitely large)…
Holographic Viscoelastic Hydrodynamics
Matteo Baggioli, Alex Buchel
Relativistic fluid hydrodynamics, organized as an effective field theory in the velocity gradients, has zero radius of convergence due to the presence of non-hydrodynamic excitatio…
Non-conformal holographic Gauss-Bonnet hydrodynamics
Alex Buchel
We study hydrodynamics of four-dimensional non-conformal holographic plasma with non-equal central charges at the ultraviolet fixed point. We compute equation of state, th…
Ringing in de Sitter spacetime
Alex Buchel
Hydrodynamics is a universal effective theory describing relaxation of quantum field theories towards equilibrium. Massive QFTs in de Sitter spacetime are never at equilibrium. We…
Singularity development and supersymmetry in holography
Alex Buchel
We study the effects of supersymmetry on singularity development scenario in holography presented in \cite{Bosch:2017ccw} (BBL). We argue that the singularity persists in a supersy…
Unstable horizons and singularity development in holography
Pablo Bosch, Alex Buchel, Luis Lehner
In holographic applications one can encounter scenarios where a long-wavelength instability can arise. In such situations, it is often the case that the dynamical end point of the…