Gravitational Action Versus Entropy on Simplicial Lattices in Four Dimensions
W. Beirl, E. Gerstenmayer, H. Markum, J. Riedler
Abstract
We investigate quantum gravity on simplicial lattices using Regge calculus with special emphasize on the problem of the unbounded action. The role of the entropy for the path integral is discussed in detail. Our numerical results show further evidence for the existence of an entropy dominated region with well defined expectation values even for unbounded action. Analyses are performed both for the standard regular triangulation of the 4-torus and for irregularly triangulated lattices obtained by insertion of vertices using barycentric subdivision.
Create a lesson
Related papers
Simulating a chiral gauge theory
Laurens Lootens, Hersh Singh
Quantum Computing for Entanglement Asymmetry and the Quantum Mpemba Effect in Field Theory
Keisuke Fujii, Harunobu Fujimura, Masazumi Honda et al.
Finite-volume Analysis of On-shell Subtraction in the Luescher formalism
Wanchen Lei, Yuting Wang, Jin-Yi Pang
A Note On Lattice Definition of Gauge Theories With Chiral Fermions
Edward Witten
Can multi-level Monte-Carlo address the sign problem in a finite-density Bose gas?
Rajatha Ranpatige, Finn M. Stokes
Confining strings in the reconfined phase of trace deformed three dimensional SU(2) Yang-Mills theory
Claudio Bonati, Michele Caselle, Alessio Negro et al.