Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-10-04
Physics
High Energy Physics
High Energy Physics - Theory
22 pages, LATEX2e, misprints corrected
Scientific paper
Just like decent classical difference-difference systems define symplectic maps on suitable phase spaces, their counterparts with properly ordered noncommutative entries come as Heisenberg equations of motion for corresponding quantum discrete-discrete models. We observe how this idea applies to a difference-difference counterpart of the Liouville equation. We produce explicit forms of of its evolution operator for the two natural space-time coordinate systems. We discover that discrete-discrete models inherit crucial features of their continuous-time parents like locality and integrability while the new-found algebraic transparency promises a useful progress in some branches of Quantum Inverse Scattering Method.
Faddeev Ludvig D.
Volkov Alexander Yu.
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