Non-Perturbative Two-Dimensional Quantum Gravity, Again
نویسنده
چکیده
منابع مشابه
Two-dimensional Quantum Field Theory, examples and applications
The main principles of two-dimensional quantum field theories, in particular two-dimensional QCD and gravity are reviewed. We study non-perturbative aspects of these theories which make them particularly valuable for testing ideas of four-dimensional quantum field theory. The dynamics of confinement and theta vacuum are explained by using the non-perturbative methods developed in two dimensions...
متن کامل05 3 v 1 1 9 M ar 1 99 2 Combinatorial and topological phase structure of non - perturbative n - dimensional quantum gravity
We provide a non-perturbative geometrical characterization of the partition function of n-dimensional quantum gravity based on a coarse classification of riemannian geometries. We show that, under natural geometrical constraints, the theory admits a continuum limit with a non-trivial phase structure parametrized by the homotopy types of the class of manifolds considered. The results obtained qu...
متن کاملThe Real Wick rotations in quantum gravity
We discuss Wick rotations in the context of gravity, with emphasis on a non-perturbative Wick rotation proposed in hep-th/0103186 mapping real Lorentzian metrics to real Euclidean metrics in proper-time coordinates. As an application, we demonstrate how this Wick rotation leads to a correct answer for a two dimensional non-perturbative path-integral.
متن کاملFeynman Rules for Simplicial Gravity
We develop the general formalism for performing perturbative diagrammatic expansions in the lattice theory of quantum gravity. The results help establish a precise correspondence between continuum and lattice quantities, and should be a useful guide for non-perturbative studies of gravity. The Feynman rules for Regge's simplicial lattice formulation of gravity are then discussed in detail in tw...
متن کاملNon-Perturbative Renormalization Group Flows in Two-Dimensional Quantum Gravity
Recently a block spin renormalization group approach was proposed for the dynamical triangulation formulation of two-dimensional quantum gravity. We use this approach to examine non-perturbatively a particular class of higher derivative actions for pure gravity. PACS numbers: 04.60.+n, 05.70.Jk, 11.10.Gh
متن کامل