A discrete-time relativistic Toda lattice

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For each of the two simplest Hamiltonian flows from the relativistic Toda hierarchy we introduce two integrable symplectic discretizations. All four discrete-time systems are demonstrated to belong to the same hierarchy and to exemplify the general scheme for symplectic maps on groups equipped with quadratic Poisson brackets. The initial-value problem for the difference equations is solved in terms of a factorization problem in a group. Interpolating Hamiltonian flows are found for all maps.

Original languageEnglish
Pages (from-to)451-465
Number of pages15
JournalJournal of Physics A: Mathematical and General
Issue number2
StatePublished - 1996
Externally publishedYes


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