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# Excited states by analytic continuation of TBA equations

@inproceedings{Dorey1996ExcitedSB, title={Excited states by analytic continuation of TBA equations}, author={P. G. Dorey and Roberto Tateo}, year={1996} }

- Published 1996

We suggest an approach to the problem of finding integral equations for the excited states of an integrable model, starting from the Thermo-dynamic Bethe Ansatz equations for its ground state. The idea relies on analytic continuation through complex values of the coupling constant , and an analysis of the monodromies that the equations and their solutions undergo. For the scaling Lee-Yang model, we find equations in this way for the one-and two-particle states in the spin-zero sector, and… CONTINUE READING

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