The Bethe Ansatz

Excitations in the vicinity of the ground state g.l.e

Now that we have provided a certain amount of detail concerning the ground state and the equations which determine it in the thermodynamic limit, we can turn our eye towards other states in the Hilbert space. In view of the Fermi segment structure of the ground state, the most natural procedure is to proceed by analogy with the Fermi gas and construct simple particle-hole excitations.

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Author: Jean-Sébastien Caux

Created: 2024-01-18 Thu 14:24