43 citations · 69 across the 16 of their papers we have counts for
18 papers · 1 filter
On the Positivity of de Sitter Group Averaging
Donald Marolf, Xuyang Yu
Perturbative quantum gravity about a global de Sitter (dS) background involves constraints that restrict the state of the linearized theory but which appear only at higher orde…
Modular flow and the area operator
Xi Dong, Donald Marolf, Pratik Rath
In the context of the AdS/CFT correspondence, the Jafferis-Lewkowycz-Maldacena-Suh (JLMS) formula relates the boundary modular Hamiltonian to the HRT area operator and the correspo…
Superconformal indices and black hole saddles
Maciej Kolanowski, Donald Marolf, Zi-Yue Wang +1
The AdS/CFT correspondence implies that the superconformal index in SU(N) supersymmetric Yang-Mills theory can be computed using the dual bulk theor…
Dirichlet walls and the end of time
Hanako Helton, Gary T. Horowitz, Donald Marolf
We study evolution in Einstein-Hilbert gravity with Dirichlet boundary conditions imposed on a finite surface. We argue that there are open sets of initial data where such evolutio…
How to tame your (black hole) saddles: Lessons from the Lorentzian Gravitational Path Integral
Maciej Kolanowski, Donald Marolf
We resolve a puzzle associated with the spherically-symmetric sector of the AdS Einstein-Maxwell partition function with inverse temperature . Since charge is quantized, the…
Lorentzian Path Integrals and Jackiw-Teitelboim wormholes with imaginary scalars
Jesse Held, Molly Kaplan, Donald Marolf +1
The Lorentzian path integral was recently used to argue that standard Euclidean axion wormholes do not dominate computations of connected AdS/CFT partition functions. We now apply…
Axion Wormholes and the AdS/CFT Factorization Problem
Jesse Held, Molly Kaplan, Donald Marolf +1
This work investigates the relevance of Euclidean and complex axion wormholes to the AdS/CFT factorization problem. We use a framework that defines bulk gravitational path integral…
The JLMS formula in a large code with approximate error correction
Xi Dong, Donald Marolf, Pratik Rath
Gauge/gravity duality is often described as a quantum error correcting code. However, as seen in the Jafferis-Lewkowycz-Maldacena-Suh (JLMS) formula, exact quantum error correction…
Holographic codes and bulk RG flows
Xi Dong, Donald Marolf, Pratik Rath
We consider the coarse-graining of holographic quantum error correcting codes under a generalized notion of bulk renormalization-group flow. In particular, we study the renormaliza…
Constraints are not enough
Gary T. Horowitz, Donald Marolf, Jorge E. Santos
The Euclidean Einstein-Hilbert action is well-known to be unbounded below and thus to raise many questions regarding the definition of the gravitational path integral. A variety of…
Geometric Entropies and their Hamiltonian Flows
Xi Dong, Donald Marolf, Pratik Rath
In holographic theories, the Hubeny-Rangamani-Takayanagi (HRT) area operator plays a key role in our understanding of the emergence of semiclassical Einstein-Hilbert gravity. When…
De Sitter quantum gravity and the emergence of local algebras
Molly Kaplan, Donald Marolf, Xuyang Yu +1
Quantum theories of gravity are generally expected to have some degree of non-locality, with familiar local physics emerging only in a particular limit. Perturbative quantum gravit…
On the nature of ensembles from gravitational path integrals
Donald Marolf
Spacetime wormholes in gravitational path integrals have long been interpreted in terms of ensembles of theories. Here we probe what sort of theories such ensembles might contain.…
When left and right disagree: Entropy and von Neumann algebras in quantum gravity with general AlAdS boundary conditions
Donald Marolf, Daiming Zhang
Euclidean path integrals for UV-completions of -dimensional bulk quantum gravity were studied in [1] by assuming that they satisfy axioms of finiteness, reality, continuity, ref…
Link-area commutators in AdS area-networks
Jesse Held, Molly Kaplan, Donald Marolf +1
Random tensor networks (RTNs) have proved to be fruitful tools for modelling the AdS/CFT correspondence. Due to their flat entanglement spectra, when discussing a given boundary re…
Constrained HRT Surfaces and their Entropic Interpretation
Xi Dong, Donald Marolf, Pratik Rath
Consider two boundary subregions and that lie in a common boundary Cauchy surface, and consider also the associated HRT surface for . In that context, the constrai…
Counting States of Black Strings with Traveling Waves II
Gary T. Horowitz, Donald Marolf
We extend our recent analysis of the entropy of extremal black strings with traveling waves. We previously considered waves carrying linear momentum on black strings in six dimensi…
Counting States of Black Strings with Traveling Waves
Gary T. Horowitz, Donalf Marolf
We consider a family of solutions to string theory which depend on arbitrary functions and contain regular event horizons. They describe six dimensional extremal black strings with…