27 citations · 83 across the 7 of their papers we have counts for
8 papers
Group-averaged baby universe field theory
Hong Zhe Chen
Gravitational sums over spacetime topology suggest a baby-universe field theory whose quanta are entire universes. We develop such a description from group-averaged amplitudes that…
Disentanglement as a strong cosmic censor
Hong Zhe Chen
If entanglement builds spacetime, then conversely, disentanglement ought to destroy spacetime. From the quantum null energy condition and quantum focusing conjecture, we obtain dis…
Entanglement, Soft Modes, and Celestial CFT
Hong Zhe Chen, Robert Myers, Ana-Maria Raclariu
We revisit the calculation of vacuum entanglement entropy in free Maxwell theory in four-dimensional Minkowski spacetime. Weyl invariance allows for this theory to be embedded as a…
Entanglement, Soft Modes, and Celestial Holography
Hong Zhe Chen, Robert C. Myers, Ana-Maria Raclariu
We evaluate the vacuum entanglement entropy across a cut of future null infinity for free Maxwell theory in four-dimensional Minkowski spacetime. The Weyl invariance of 4D Maxwell…
Charged Complexity and the Thermofield Double State
Shira Chapman, Hong Zhe Chen
We establish a systematic framework for studying quantum computational complexity of Gaussian states of charged systems based on Nielsen's geometric approach. We use this framework…
Conical Holographic Heat Engines
Wasif Ahmed, Hong Zhe Chen, Elliott Gesteau +2
We demonstrate that adding a conical deficit to a black hole holographic heat engine increases its efficiency; in contrast, allowing a black hole to accelerate {\it decreases} effi…
Holographic CFT states for localized perturbations to AdS black holes
Hong Zhe Chen, Mark Van Raamsdonk
In this note, we describe a holographic CFT construction of states dual to scalar perturbations of the maximally extended three-dimensional AdS-Schwarzschild black hole. The states…
Entanglement entropy on a fuzzy sphere with a UV cutoff
Hong Zhe Chen, Joanna L. Karczmarek
We introduce a UV cutoff into free scalar field theory on the noncommutative (fuzzy) two-sphere. Due to the IR-UV connection, varying the UV cutoff allows us to control the effecti…