Self-dual gravity as a large-N limit of the 2D non-linear sigma model

Q. Han Park

doi:10.1016/0370-2693(90)91737-V

Self-dual gravity as a large-N limit of the 2D non-linear sigma model

Q. Han Park

Department of Physics

Research output: Contribution to journal › Article

71 Citations (Scopus)

Abstract

The 4D self-dual gravity is shown to be equivalent to a large-N limit of the 2D non-linear sigma model with Wess-Zumino terms only. Infinite dimensional symmetries of the self-dual Einstein equations are derived and shown to form a closed algebra which includes W_∞-a large-N limit of Zamolodchikov's W_N algebra. These are interpreted in terms of Penrose's twistor theory.

Original language	English
Pages (from-to)	287-290
Number of pages	4
Journal	Physics Letters B
Volume	238
Issue number	2-4
DOIs	https://doi.org/10.1016/0370-2693(90)91737-V
Publication status	Published - 1990 Apr 5

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0370-2693(90)91737-V

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Park, Q. H. (1990). Self-dual gravity as a large-N limit of the 2D non-linear sigma model. Physics Letters B, 238(2-4), 287-290. https://doi.org/10.1016/0370-2693(90)91737-V

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