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arxiv: cond-mat/9402083 · v1 · submitted 1994-02-21 · ❄️ cond-mat

On the parafermionic scattering of an integrable Heisenberg model with impurity

M.J.Martins This is my paper
classification ❄️ cond-mat
keywords impurityparafermionicintegrablemodelscatteringspin-amplitudeboundary
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We have studied the massive parafermionic sector of an integrable spin-$s$ chain with an impurity of spin-$s^{'}$ in presence of a magnetic field. The effect of the impurity is encoded in a computable parafermionic impurity scattering amplitude and its contribution to the finite size properties of the free energy is discussed. As an example we compute the non-integer degeneracy of the ground state. For the simplest model of $s=1$ and $s^{'}=1/2$, its interpretation in terms of conformally invariant boundary conditions is presented.

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