The Stress Tensor in Quenched Random Systems

Details The Stress Tensor in Quenched Random Systems The Stress Tensor in Quenched Random Systems

2001-11-02

arxiv.org/abs/cond-mat/0111031v1

Statistical Field Theories, A. Cappelli and G.Mussardo eds, Kluwer, 2002.

Physics

Condensed Matter

Statistical Mechanics

5 pages; talk presented at Workshop on Statistical Field Theory, Como, June, 2001

Scientific paper

The talk describes recent progress in understanding the behaviour of the stress tensor and its correlation functions at a critical point of a generic quenched random system. The topics covered include:(i) the stress tensor in random systems considered as deformed pure systems; (ii) correlators of the stress tensor at a random fixed point: expectations from the replica approach and c-theorem sum rules; (iii) partition function on a torus; (iv) how the stress tensor enters into correlation functions: subtleties with Kac operators.

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