Research directions
From the foundations of quantum spacetime to its physical consequences.
Non-perturbative
quantum gravity
Background-independent approaches to gravity and the mathematical structure of quantum spacetime.
FIELD THEORYQuantum fields
and renormalization
Non-perturbative dynamics, renormalization group flows, and the foundations of quantum field theory.
GRAVITATIONBlack holes
and cosmology
Classical and modified gravity, effective descriptions, and the physics of spacetime in extreme conditions.
COMPUTATIONNumerical methods
and simulations
Computational tools for non-perturbative physics, quantum gravity, and quantum field theory.
Selected publications
Recent work and representative results across our research directions.
Holonomy Reconstruction and Character Varieties of Lorentzian Curved Tetrahedra
arXiv:2605.26410 · Preprint
Regular ultracompact objects with anti–de Sitter cores as polymerized vacuum solutions
Physical Review D 114, 044066 (2026)
Beyond expectation values: Generalized semiclassical expansions for matrix elements of gauge coherent states
Physical Review D 114, 064082 (2026)
From Principles to Effective Models: A Constructive Framework for Effective Covariant Actions with a Unique Vacuum Solution
arXiv:2512.24960 · Preprint
One-loop effective action from the coherent state path integral of loop quantum gravity
Physical Review D 112, 024033 (2025)
A community exploring
fundamental physics.
Led by Hongguang Liu, our group brings together researchers, visitors, and students interested in quantum gravity and its connections to field theory.
Meet the teamInterested in working with us?
Graduate study, research visits, and collaboration.