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Title: Symmetries of the 4D self-dual Yang-Mills equation and the reduction to the 2D KdV equation

Journal Article · · Annals of Physics (New York); (United States)
OSTI ID:5197528
 [1]
  1. Univ. of Pennsylvania, Philadelphia (United States)

The Lie-point and the Lie-Baecklund symmetries of 4D self-dual Yang-Mills equation are investigated as those of differential equations. The Lie-point symmetry is nothing but the gauge symmetry at the level of field equation, but the Lie-Baecklund symmetries are new. In particular, by the symmetry reduction to KdV equation in 2D the corresponding Lie-Baecklund symmetries which reduce to the isospectral symmetries or to the nonisospectral symmetries are identified. Some speculations on the existence of the self-dual Yang-Mills hierarchy as well as the derivation of the 4D analogue of the string equation of the nonperturbative 2D quantum gravity are given.

OSTI ID:
5197528
Journal Information:
Annals of Physics (New York); (United States), Vol. 215:1; ISSN 0003-4916
Country of Publication:
United States
Language:
English