A squeezed-state approach for the spin polaron in the t-J model

Bilge S., Altanhan T.

JOURNAL OF PHYSICS-CONDENSED MATTER, vol.12, no.8, pp.1837-1843, 2000 (SCI-Expanded) identifier identifier


The ground-state energy of spin polarons is investigated by means of squeezed states. The analytical theory developed by Barentzen for the intermediate-coupling region in the t-J model is improved by a procedure of diagonalization of quadratic terms in the effective Hamiltonian through a squeezing transformation.