An inhomogeneous Lax representation for the Hirota equation
arXiv:1609.06761 · doi:10.1088/1751-8121/aa5303
Abstract
Motivated by recent work on quantum integrable models without U(1) symmetry, we show that the sl(2) Hirota equation admits a Lax representation with inhomogeneous terms. The compatibility of the auxiliary linear problem leads to a new consistent family of Hirota-like equations.
arXiv comment15 pages; v2: minor changes
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