منابع مشابه
2D String Theory Coupled to Quantum Gravity
We consider self-avoiding Nambu-Goto open strings on a random surface. We have shown that the partition function of such a string theory can be calculated exactly. The string susceptibility for the disk is evaluated to be − 2 . We also consider modifications of the Nambu-Goto action which are exactly soluble on a random surface.
متن کاملMultiple Ising Spins Coupled to 2d Quantum Gravity
We study a model in which p independent Ising spins are coupled to 2d quantum gravity (in the form of dynamical planar φ graphs). Consideration is given to the p→∞ limit in which the partition function becomes dominated by certain graphs; we identify most of these graphs. A truncated model is solved exactly providing information about the behaviour of the full model in the limit β → 0. Finally,...
متن کاملConformal internal symmetry of 2d σ-models coupled to gravity and a dilaton
General Relativity reduced to two dimensions possesses a large group of symmetries that exchange classical solutions. The associated Lie algebra is known to contain the affine Kac-Moody algebra A (1) 1 and half of a real Witt algebra. In this paper we exhibit the full symmetry under the semi-direct product of Lie(A (1) 1 ) by the Witt algebra Lie(W). Furthermore we exhibit the corresponding hid...
متن کاملDamaging 2D Quantum Gravity
We investigate numerically the behaviour of damage spreading in a Kauffman cellular automaton with quenched rules on a dynamical φ graph, which is equivalent to coupling the model to discretized 2D gravity. The model is interesting from the cellular automaton point of view as it lies midway between a fully quenched automaton with fixed rules and fixed connectivity and a (soluble) fully annealed...
متن کاملQuenching 2D Quantum Gravity
We simulate the Ising model on a set of fixed random φ graphs, which corresponds to a quenched coupling to 2D gravity rather than the annealed coupling that is usually considered. We investigate the critical exponents in such a quenched ensemble and compare them with measurements on dynamical φ graphs, flat lattices and a single fixed φ graph. Submitted to Phys Lett B. 1 Address: Sept. 1993 199...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1996
ISSN: 0920-5632
DOI: 10.1016/0920-5632(96)00309-x