Boundary Logarithmic Conformal Field Theory
ArXiv hep-th/0003184 (2000)
Abstract:
We discuss the effect of boundaries in boundary logarithmic conformal field theory and show, with reference to both $c=-2$ and $c=0$ models, how they produce new features even in bulk correlation functions which are not present in the corresponding models without boundaries. We discuss the modification of Cardy's relation between boundary states and bulk quantities.What does E_8 know about 11 dimensions ?
ArXiv hep-th/9911252 (1999)
Abstract:
We discuss some possible relationships in gauge theories, string theory and M theory in the light of some recent results obtained in gauge invariant supersymmetric quantum mechanics. In particular this reveals a new relationship between the gauge group E_8 and 11-dimensional space.Peeling and Multi-critical Matter Coupled to Quantum Gravity
ArXiv hep-th/9911189 (1999)
Abstract:
We show how to determine the unknown functions arising when the peeling decomposition is applied to multi-critical matter coupled to two-dimensional quantum gravity and compute the loop-loop correlation functions. The results that $\eta=2+2/(2K-3)$ and $\nu=1-3/2K$ agree with the slicing decomposition, and satisfy Fisher scaling.Bottleneck Surfaces and Worldsheet Geometry of Higher-Curvature Quantum Gravity
ArXiv hep-th/9910195 (1999)
Abstract:
We describe a simple lattice model of higher-curvature quantum gravity in two dimensions and study the phase structure of the theory as a function of the curvature coupling. It is shown that the ensemble of flat graphs is entropically unstable to the formation of baby universes. In these simplified models the growth in graphs exhibits a branched polymer behaviour in the phase directly before the flattening transition.The spectral dimension of non-generic branched polymers
NUCL PHYS B-PROC SUP 73 (1999) 783-785