80 citations · 234 across the 7 of their papers we have counts for
8 papers
Conditional and Multipartite Entanglements of Purification and Holography
Ning Bao, Illan F. Halpern
In this work we generalize the entanglement of purification and its conjectured holographic dual to conditional and multipartite versions of the same, where the optimization defini…
The Boundary of the Future
Chris Akers, Raphael Bousso, Illan F. Halpern +1
We prove that the boundary of the future of a surface consists precisely of the points that lie on a null geodesic orthogonal to such that between and there are…
Holographic Inequalities and Entanglement of Purification
Ning Bao, Illan F. Halpern
We study the conjectured holographic duality between entanglement of purification and the entanglement wedge cross-section. We generalize both quantities and prove several informat…
Asymptotic Charges Cannot Be Measured in Finite Time
Raphael Bousso, Venkatesa Chandrasekaran, Illan F. Halpern +1
To study quantum gravity in asymptotically flat spacetimes, one would like to understand the algebra of observables at null infinity. Here we show that the Bondi mass cannot be obs…
Information Content of Gravitational Radiation and the Vacuum
Raphael Bousso, Illan Halpern, Jason Koeller
Known entropy bounds, and the Generalized Second Law, were recently shown to imply bounds on the information arriving at future null infinity. We complete this derivation by includ…
Holography and quantum states in elliptic de Sitter space
Illan F. Halpern, Yasha Neiman
We outline a program for interpreting the higher-spin dS/CFT model in terms of physics in the causal patch of a dS observer. The proposal is formulated in "elliptic" de Sitter spac…
Quantum fields and entanglement on a curved lightfront
Illan Halpern, Yasha Neiman
We consider field quantization on an arbitrary null hypersurface in curved spacetime. We discuss the de Sitter horizon as the simplest example, relating the horizon quantization to…
A Density Spike on Astrophysical Scales from an N-Field Waterfall Transition
Illan F. Halpern, Mark P. Hertzberg, Matthew A. Joss +1
Hybrid inflation models are especially interesting as they lead to a spike in the density power spectrum on small scales, compared to the CMB, while also satisfying current bounds…