Discrete gravity dynamics from effective spin foams

SK Asante, B Dittrich, HM Haggard - Classical and Quantum …, 2021 - iopscience.iop.org
The first computation of a spin foam dynamics that provides a test of the quantum equations
of motions of gravity is presented. Specifically, a triangulation that includes an inner edge is …

[HTML][HTML] SL (2, C) Chern–Simons theory, a non-planar graph operator, and 4D quantum gravity with a cosmological constant: Semiclassical geometry

HM Haggard, M Han, W Kamiński, A Riello - Nuclear Physics B, 2015 - Elsevier
We study the expectation value of a nonplanar Wilson graph operator in SL (2, C) Chern–
Simons theory on S 3. In particular we analyze its asymptotic behavior in the double-scaling …

Schur Quantization and Complex Chern-Simons theory

D Gaiotto, J Teschner - arXiv preprint arXiv:2406.09171, 2024 - arxiv.org
Any four-dimensional Supersymmetric Quantum Field Theory with eight supercharges can
be associated to a certain complex symplectic manifold called the" K-theoretic Coulomb …

[HTML][HTML] Quantum gravity kinematics from extended TQFTs

B Dittrich, M Geiller - New Journal of Physics, 2017 - iopscience.iop.org
In this paper, we show how extended topological quantum field theories (TQFTs) can be
used to obtain a kinematical setup for quantum gravity, ie a kinematical Hilbert space …

Symmetries of quantum spacetime in three dimensions

F Cianfrani, J Kowalski-Glikman, D Pranzetti, G Rosati - Physical Review D, 2016 - APS
By applying loop quantum gravity techniques to 3D gravity with a positive cosmological
constant Λ, we show how the local gauge symmetry of the theory, encoded in the constraint …

[HTML][HTML] Quasi-local holographic dualities in non-perturbative 3d quantum gravity I–Convergence of multiple approaches and examples of Ponzano–Regge statistical …

B Dittrich, C Goeller, ER Livine, A Riello - Nuclear Physics B, 2019 - Elsevier
This is the first of a series of papers dedicated to the study of the partition function of three-
dimensional quantum gravity on the twisted solid torus with the aim to deepen our …

Encoding curved tetrahedra in face holonomies: phase space of shapes from group-valued moment maps

HM Haggard, M Han, A Riello - Annales Henri Poincaré, 2016 - Springer
We present a generalization of Minkowski's classic theorem on the reconstruction of
tetrahedra from algebraic data to homogeneously curved spaces. Euclidean notions such as …

Quasi-local holographic dualities in non-perturbative 3d quantum gravity

B Dittrich, C Goeller, ER Livine… - Classical and Quantum …, 2018 - iopscience.iop.org
We present a line of research aimed at investigating holographic dualities in the context of
three dimensional quantum gravity within finite bounded regions. The bulk quantum …

Flux formulation of loop quantum gravity: Classical framework

B Dittrich, M Geiller - Classical and Quantum Gravity, 2015 - iopscience.iop.org
We recently introduced a new representation for loop quantum gravity (LQG), which is based
on the BF vacuum and is in this sense much nearer to the spirit of spin foam dynamics. In the …

A new realization of quantum geometry

B Bahr, B Dittrich, M Geiller - Classical and Quantum Gravity, 2021 - iopscience.iop.org
We construct in this article a new realization of quantum geometry, which is obtained by
quantizing the recently-introduced flux formulation of loop quantum gravity. In this …