Research
Information, geometry & gravity
My research explores how quantum information is reflected in spacetime geometry and how holography describes the quantum states of black holes. I work across two connected directions, using analytical methods alongside computations in Mathematica and Python.
Quantum Information in Quantum Gravity
Multipartite entanglement
When a quantum system is divided into several parts, its correlations can be richer than those captured by the entropy of a single subsystem. I study measures that distinguish these patterns of entanglement and their behavior when subsystems are combined.
With collaborators, I introduced multi-entropy, a generalization of entanglement entropy to multiple parties. Related work studies broader families of measures and a conjectured monotonicity property under coarse-graining.
Holography & emergent geometry
Gauge–gravity duality provides a way to study gravity through a quantum field theory. One question guiding my work is how multipartite entanglement measures can be calculated using geometric objects in the gravitational description.
I have worked on classifying such measures using permutation groups, and on the role of replica symmetry in their bulk geometries. This connects algebraic descriptions of quantum correlations with networks of geometric surfaces and singularities.
Black Holes and Holography
Supersymmetric phases & black hole thermodynamics
Black hole entropy and instabilities offer clues to the microscopic description of gravity. My work with collaborators investigates dual dressed black holes and supersymmetric grey galaxies, configurations that combine a black hole with additional degrees of freedom outside it.
With Harold Jones and Finn Larsen, I studied the phases of supersymmetric ground states in AdS₄, including configurations consisting of a core black hole and a gas, and their relation to the superconformal index.
The gravitational path integral
With Finn Larsen, I also studied the admissibility of complex black hole geometries in the Euclidean gravitational path integral, and its connection to phase transitions in the superconformal index.