258 citations · 1.1k across the 22 of their papers we have counts for
22 papers
Checking volume-law entropy with HRT surfaces
Tyler Guglielmo, Phuc Nguyen
We check formally that the Hubeny-Rangamani-Takayanagi prescription for holographic entanglement entropy -- when applied to a static black brane spacetime and to a wide class of su…
Quantum chaos in a weakly-coupled field theory with nonlocality
Willy Fischler, Tyler Guglielmo, Phuc Nguyen
In order to study the chaotic behavior of a system with non-local interactions, we will consider weakly coupled non-commutative field theories. We compute the Lyapunov exponent of…
Scrambling and the black hole atmosphere
Ted Jacobson, Phuc Nguyen
We argue that the scrambling time is the same, up to a numerical factor in three or more spacetime dimensions, as the time for the atmosphere to fall across the horizon or escape,…
Light-ray moments as endpoint contributions to modular Hamiltonians
Daniel Kabat, Gilad Lifschytz, Phuc Nguyen +1
We consider excited states in a CFT, obtained by applying a weak unitary perturbation to the vacuum. The perturbation is generated by the integral of a local operator of…
Endpoint contributions to excited-state modular Hamiltonians
Daniel Kabat, Gilad Lifschytz, Phuc Nguyen +1
We compute modular Hamiltonians for excited states obtained by perturbing the vacuum with a unitary operator. We use operator methods and work to first order in the strength of the…
The Speed of Quantum Information Spreading in Chaotic Systems
Josiah Couch, Stefan Eccles, Phuc Nguyen +2
We present a general theory of quantum information propagation in chaotic quantum many-body systems. The generic expectation in such systems is that quantum information does not pr…
Diffeomorphism invariance and the black hole information paradox
Ted Jacobson, Phuc Nguyen
We argue that the resolution to the black hole information paradox lies in a proper accounting of the implications of diffeomorphism invariance for the Hilbert space and observable…
Holographic Complexity and Volume
Josiah Couch, Stefan Eccles, Ted Jacobson +1
The previously proposed "Complexity=Volume" or CV-duality is probed and developed in several directions. We show that the apparent lack of universality for large and small black ho…
Entanglement of purification: from spin chains to holography
Phuc Nguyen, Trithep Devakul, Matthew G. Halbasch +2
Purification is a powerful technique in quantum physics whereby a mixed quantum state is extended to a pure state on a larger system. This process is not unique, and in systems com…
On holographic entanglement entropy of Horndeski black holes
Elena Caceres, Ravi Mohan, Phuc H. Nguyen
We study entanglement entropy in a particular tensor-scalar theory: Horndeski gravity. Our goal is two-fold: investigate the Lewkowycz-Maldacena proposal for entanglement entropy i…
A defect in holographic interpretations of tensor networks
Bartlomiej Czech, Phuc H. Nguyen, Sivaramakrishnan Swaminathan
We initiate the study of how tensor networks reproduce properties of static holographic space-times, which are not locally pure anti-de Sitter. We consider geometries that are holo…
Noether charge, black hole volume, and complexity
Josiah Couch, Willy Fischler, Phuc H. Nguyen
In this paper, we study the physical significance of the thermodynamic volumes of AdS black holes using the Noether charge formalism of Iyer and Wald. After applying this formalism…
LARES Satellite Thermal Forces and a Test of General Relativity
Richard Matzner, Phuc Nguyen, Jason Brooks +11
We summarize a laser-ranged satellite test of frame-dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation…
Holographic entanglement chemistry
Elena Caceres, Phuc H. Nguyen, Juan F. Pedraza
We use the Iyer-Wald formalism to derive an extended first law of entanglement that includes variations in the cosmological constant, Newton's constant and --in the case of higher-…
An equal area law for holographic entanglement entropy of the AdS-RN black hole
Phuc H. Nguyen
The Anti-de Sitter-Reissner-Nordstrom (AdS-RN) black hole in the canonical ensemble undergoes a phase transition similar to the liquid-gas phase transition, i.e. the isocharges on…
Holographic entanglement entropy and the extended phase structure of STU black holes
Elena Caceres, Phuc H. Nguyen, Juan F. Pedraza
We study the extended thermodynamics, obtained by considering the cosmological constant as a thermodynamic variable, of STU black holes in 4-dimensions in the fixed charge ensemble…
Modelling LARES temperature distribution and thermal drag
Phuc H. Nguyen, Richard Matzner
The LARES satellite, a laser-ranged space experiment to contribute to geophysics observation, and to measure the general relativistic Lense-Thirring effect, has been observed to un…
Holographic Schwinger effect in de Sitter space
Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza +1
Using the AdS/CFT correspondence, we construct the holographic dual of a tunneling instanton describing Schwinger pair creation in de Sitter space. Our approach allows us to extrac…
Fluctuation and dissipation in de Sitter space
Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza +1
In this paper we study some thermal properties of quantum field theories in de Sitter space by means of holographic techniques. We focus on the static patch of de Sitter and assume…
The double-power approach to spherically symmetric astrophysical systems
Manasvi Lingam, Phuc H. Nguyen
In this paper, we present two simple approaches for deriving anisotropic distribution functions for a wide range of spherical models. The first method involves multiplying and divi…
Analytical families of 2-component anisotropic polytropes and their relativistic extensions
Phuc H. Nguyen, Manasvi Lingam
In this paper, we study a family of two-component anisotropic polytropes which model a wide range of spherically symmetric astrophysical systems such as early-type baryonic galaxie…
Anisotropic Models for Globular Clusters, Galactic Bulges and Dark Halos
P. H. Nguyen, J. F. Pedraza
Spherical systems with polytropic equations of state are of great interest in astrophysics. They are widely used to describe neutron stars, red giants, white dwarfs, brown dwarfs,…