| Jan 13, 2026 | 🚨 New paper on arXiv: Generalized Entropy is von Neumann Entropy II: The complete symmetry group and edge modes w/ Marc Klinger and Gautam Satishchandran We show that gravitational backreaction perturbs the horizon area in an angle-dependent way, encoded in “edge modes” related to an infinite-dimensional boost supertranslation symmetry. The resulting algebra of observables is Type II and the entropy of any semiclassical state is the generalized entropy with an additional edge mode contribution. |
| Nov 05, 2025 | 🚨 New paper on arXiv: Analytically Continuing the Randomized Measurement Toolbox w/ Akash Vijay, Ayush Raj, Benoît Vermersch, Andreas Elben, and Laimei Nie We develop a framework for extracting non-polynomial analytic functions of density matrices in randomized measurement experiments by a method of analytical continuation, and demonstrate its application to estimating von Neumann entanglement entropy from experimental Rényi data. |
| Oct 08, 2025 | 🚨 New paper on arXiv: Emergent Mixed States for Baby Universes and Black Holes w/ Edward Witten We explored the fate of quantum states in the semiclassical limit of the AdS/CFT correspondence, focusing on cases where the gravitational side involves black holes or “baby universes.” This resolved an interesting puzzle posed by Stefano Antonini and Pratik Rath on the nature of closed universes in AdS/CFT. |
| Oct 03, 2025 | 🚨 New paper on arXiv: Stringy algebras, stretched horizons, and quantum-connected wormholes w/ Aidan Herderschee We studied how the non-locality of strings in string theory leads to different regions of spacetime not being independent. This led us to understand precise notions of stretched horizons and intrinsically stringy ER=EPR. |
| Aug 07, 2025 | My paper with Vladimir Narovlansky and Nikita Sopenko on optimal bounds for entanglement at long distances has been published Physical Review Letters. There are limits to how spooky action can be at a distance! |
| Jul 09, 2025 | A very brief glimpse into my current headspace has just been released by the IAS, viewable here. |
| May 22, 2025 | 🚨 New paper on arXiv: Absolute Entropy and the Observer’s No-Boundary State w/ Andreas Blommaert and Erez Urbach We investigate Hartle and Hawking’s no-boundary proposal for observers in closed universes, finding that it is the universal maximum entropy state which realizes a recent conjecture of Edward Witten. |
| May 19, 2025 | Hyaline Chen, a Princeton undergraduate physics student I had the pleasure of advising, has won the PACM Best Research Project Award for his work that culminated in our paper on fine details of quantum chaos. Congratulations, Hyaline! |
| May 14, 2025 | Geoff Penington and I have been awarded second prize in the 2025 Gravity Research Foundation Essay Contest for our paper on quantum teleportation into black holes! Our work explored the deep relationship between information and energy in quantum black holes. |