Block Spin Renormalization-Group Approach And 2-Dimensional Quantum-Gravity
Abbreviated Journal Title
Phys. Rev. D
ISING-MODEL; TRANSITION; BEHAVIOR; LATTICE; Astronomy & Astrophysics; Physics, Particles & Fields
A block spin renormalization group approach is proposed for the dynamical triangulation formulation of two-dimensional quantum gravity. The idea is to update link flips on the block lattice in response to link flips on the original lattice. Just as the connectivity of the original lattice is meant to be a lattice representation of the metric, the block links are determined in such a way that the connectivity of the block lattice represents a block metric. As an illustration, this approach is applied to the Ising model coupled to two-dimensional quantum gravity. The correct critical coupling is reproduced, but the critical exponent is obscured by unusually large finite-size effects.
Physical Review D
"Block Spin Renormalization-Group Approach And 2-Dimensional Quantum-Gravity" (1994). Faculty Bibliography 1990s. 1163.