A slow review of the AGT correspondence

B Le Floch - Journal of Physics A: Mathematical and Theoretical, 2022 - iopscience.iop.org
Starting with a gentle approach to the Alday–Gaiotto–Tachikawa (AGT) correspondence
from its 6d origin, these notes provide a wide (albeit shallow) survey of the literature on …

Spinfoams and high-performance computing

P Dona, M Han, H Liu - Handbook of Quantum Gravity, 2023 - Springer
Numerical methods are a powerful tool for doing calculations in spinfoam theory. We review
the major frameworks available, their definition, and various applications. We start from …

Spinfoam on a Lefschetz thimble: Markov chain Monte Carlo computation of a Lorentzian spinfoam propagator

M Han, Z Huang, H Liu, D Qu, Y Wan - Physical Review D, 2021 - APS
We compute numerically the Lorentzian Engle-Pereira-Rovelli-Livine spinfoam propagator
on a 4-simplex, by adapting the Lefschetz thimble and Markov chain Monte-Carlo methods …

Spin Foams, Refinement Limit, and Renormalization

SK Asante, B Dittrich, S Steinhaus - Handbook of Quantum Gravity, 2023 - Springer
Spin foams provide path integrals for quantum gravity, which employ discretizations as
regulator. To obtain regulator independent predictions, we must remove these fiducial …

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 …

Modified cosmology from quantum deformed entropy

S Jalalzadeh, H Moradpour, PV Moniz - Physics of the Dark Universe, 2023 - Elsevier
Abstract Jalalzadeh (2022), established that the thermodynamical entropy of a quantum-
deformed black hole with horizon area A can be written as S q= π sin A 8 GN/sin π 2 N …

[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 …

Loop gravity string

L Freidel, A Perez, D Pranzetti - Physical Review D, 2017 - APS
In this work we study canonical gravity in finite regions for which we introduce a
generalization of the Gibbons-Hawking boundary term including the Immirzi parameter. We …

Loop quantum gravity, exact holographic map**, and holographic entanglement entropy

M Han, LY Hung - Physical Review D, 2017 - APS
The relation between loop quantum gravity (LQG) and tensor networks is explored from the
perspectives of the bulk-boundary duality and holographic entanglement entropy. We find …