Quantum Integrals of Motion for the Heisenberg Spin Chain

Details Quantum Integrals of Motion for the Heisenberg Spin Chain Quantum Integrals of Motion for the Heisenberg Spin Chain

1994-03-24

arxiv.org/abs/hep-th/9403149v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages Report #: LAVAL-PHY-94-20

Scientific paper

An explicit expression for all the quantum integrals of motion for the isotropic Heisenberg $s=1/2$ spin chain is presented. The conserved quantities are expressed in terms of a sum over simple polynomials in spin variables. This construction is direct and independent of the transfer matrix formalism. Continuum limits of these integrals in both ferrromagnetic and antiferromagnetic sectors are briefly discussed.

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