Separation of variables for quantum integrable systems on elliptic curves

Details Separation of variables for quantum integrable systems on elliptic curves Separation of variables for quantum integrable systems on elliptic curves

1999-05-12

arxiv.org/abs/math/9905072v2

Mathematics

Quantum Algebra

26 pages, misquotation corrected

Scientific paper

10.1088/0305-4470/32/46/302

We extend Sklyanin's method of separation of variables to quantum integrable models associated to elliptic curves. After reviewing the differential case, the elliptic Gaudin model studied by Enriquez, Feigin and Rubtsov, we consider the difference case and find a class of transfer matrices whose eigenvalue problem can be solved by separation of variables. These transfer matrices are associated to representations of the elliptic quantum group $E_{\tau,\eta}(sl_2)$ by difference operators. One model of statistical mechanics to which this method applies is the IRF model with antiperiodic boundary conditions. The eigenvalues of the transfer matrix are given as solutions of a system of quadratic equations in a space of higher order theta functions.

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