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- ON DISCRETE SYSMMETRIES OF THE MULTI-BOSON KP HIERARCHIES
- Universidade Estadual Paulista (UNESP)
- We show that the multi-boson KP hierarchies possess a class of discrete symmetries linking them to discrete Toda systems. These discrete symmetries are generated by the similarity transformation of the corresponding Lax operator. This establishes a canonical nature of the discrete transformations. The spectral equation, which defines both the lattice system and the corresponding Lax operator, plays a key role in determining pertinent symmetry structure. We also introduce the concept of the square root lattice leading to a family of new pseudo-differential operators with covariance under additional Backlund transformations.
- Physics Letters B. Amsterdam: Elsevier B.V., v. 327, n. 3-4, p. 266-273, 1994.
- Elsevier B.V.
- Acesso restrito
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