[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 …

SU (2) graph invariants, Regge actions and polytopes

P Donà, M Fanizza, G Sarno… - Classical and Quantum …, 2018 - iopscience.iop.org
We revisit the the large spin asymptotics of 15j symbols in terms of cosines of the 4d
Euclidean Regge action, as derived by Barrett and collaborators using a saddle point …

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 …

Fusion basis for lattice gauge theory and loop quantum gravity

C Delcamp, B Dittrich, A Riello - Journal of High Energy Physics, 2017 - Springer
A bstract We introduce a new basis for the gauge-invariant Hilbert space of lattice gauge
theory and loop quantum gravity in (2+ 1) dimensions, the fusion basis. In doing so, we shift …

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 …

Bubble networks: framed discrete geometry for quantum gravity

L Freidel, ER Livine - General Relativity and Gravitation, 2019 - Springer
In the context of canonical quantum gravity in 3++ 1 dimensions, we introduce a new notion
of bubble network that represents discrete 3d space geometries. These are natural …

Towards the Turaev-Viro amplitudes from a Hamiltonian constraint

V Bonzom, M Dupuis, F Girelli - Physical Review D, 2014 - APS
Three-dimensional (3D) loop quantum gravity with a vanishing cosmological constant can
be related to the quantization of the SU (2) BF theory discretized on a lattice. At the classical …

The Fock space of loopy spin networks for quantum gravity

C Charles, ER Livine - General Relativity and Gravitation, 2016 - Springer
In the context of the coarse-graining of loop quantum gravity, we introduce loopy and tagged
spin networks, which generalize the standard spin network states to account explicitly for …