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On critical exponents without Feynman diagrams

Sen, Kallol and Sinha, Aninda (2016) On critical exponents without Feynman diagrams. In: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 49 (44).

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Official URL: http://dx.doi.org/10.1088/1751-8113/49/44/445401

Abstract

In order to achieve a better analytic handle on the modern conformal bootstrap program, we re-examine and extend the pioneering 1974 work of Polyakov's, which was based on consistency between the operator product expansion and unitarity. As in the bootstrap approach, this method does not depend on evaluating Feynman diagrams. We show how this approach can be used to compute the anomalous dimensions of certain operators in the O(n) model at the Wilson-Fisher fixed point in 4 - epsilon dimensions up to O(epsilon(2)).

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 03 Dec 2016 06:19
Last Modified: 03 Dec 2016 06:19
URI: http://eprints.iisc.ac.in/id/eprint/55263

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