Results 31 to 40 of about 3,508 (162)

Spin foam models for quantum gravity from lattice path integrals [PDF]

Physical Review D, 2009
19 pages, 1 ...
openaire   +3 more sources

Topological fermion condensates from anomalies

Journal of High Energy Physics, 2018
We show that a class of fermion theory formulated on a compact, curved manifold will generate a condensate whose magnitude is determined only by the volume and Euler characteristic of the space.
Simon Catterall, Jack Laiho, Judah Unmuth-Yockey   +2 more
doaj   +1 more source

Spikes and spines in 4D Lorentzian simplicial quantum gravity

Journal of High Energy Physics
Simplicial approaches to quantum gravity such as quantum Regge calculus and spin foams include configurations where bulk edges can become arbitrarily large while the boundary edges are kept small.
Johanna Borissova, Bianca Dittrich, Dongxue Qu, Marc Schiffer   +3 more
doaj   +1 more source

What is the curvature of 2D Euclidean quantum gravity?

Journal of High Energy Physics
We re-examine the nonperturbative curvature properties of two-dimensional Euclidean quantum gravity, obtained as the scaling limit of a path integral over dynamical triangulations of a two-sphere, which lies in the same universality class as Liouville ...
R. Loll, T. Niestadt
doaj   +1 more source

Matrix-Model Simulations Using Quantum Computing, Deep Learning, and Lattice Monte Carlo

PRX Quantum, 2022
Matrix quantum mechanics plays various important roles in theoretical physics, such as a holographic description of quantum black holes, and it underpins the only practical numerical approach to the study of complex high-dimensional supergravity theories.
Enrico Rinaldi, Xizhi Han, Mohammad Hassan, Yuan Feng, Franco Nori, Michael McGuigan, Masanori Hanada   +6 more
doaj   +1 more source

Rindler physics with a UV cutoff on the lattice

Journal of High Energy Physics
We investigate quantum field theory in Rindler space with a UV cutoff by considering a free scalar field on a lattice in Rindler coordinates. We find that the Minkowski vacuum is not exactly thermal with respect to the local lattice Rindler Hamiltonian ...
Seiken Chikazawa, Seiji Terashima
doaj   +1 more source

Phases of tree-decorated Dynamical Triangulations in 3D

Journal of High Energy Physics
This work revisits the Euclidean Dynamical Triangulation (DT) approach to non-perturbative quantum gravity in three dimensions. Inspired by a recent combinatorial study [1] of a subclass of 3-sphere triangulations constructed from trees, called the ...
Timothy Budd, Dániel Németh
doaj   +1 more source

Possible Effects of the Fractal Distribution of Relic Wormholes

Universe, 2021
We discuss the possibility that the distribution of relic wormholes may possess fractal properties. Relic wormholes and their fractal distributions are predicted in a natural way by lattice quantum gravity models.
Alexander A. Kirillov, Elena P. Savelova, Polina O. Vladykina   +2 more
doaj   +1 more source

p-adic Mellin amplitudes

Journal of High Energy Physics, 2019
In this paper, we propose a p-adic analog of Mellin amplitudes for scalar operators, and present the computation of the general contact amplitude as well as arbitrary-point tree-level amplitudes for bulk diagrams involving up to three internal lines, and
Christian Baadsgaard Jepsen, Sarthak Parikh   +1 more
doaj   +1 more source

Discrete gravity on random tensor network and holographic Rényi entropy

Journal of High Energy Physics, 2017
In this paper we apply the discrete gravity and Regge calculus to tensor networks and Anti-de Sitter/conformal field theory (AdS/CFT) correspondence. We construct the boundary many-body quantum state |Ψ〉 using random tensor networks as the holographic ...
Muxin Han, Shilin Huang
doaj   +1 more source