Heriot-Watt Mathematics Report Series
HWM99-43, 22 Dec 1999

Pair formation in the Hubbard-Davydov model

L Cruzeiro-Hansson, J C Eilbeck, J L Marin and F M Russell


Abstract

We study a model 1-D system which describes two quasi-particles interacting with a nonlinear lattice. The quasi-particles are treated quantum mechanically, whereas the lattice is treated classically. For a range of model parameters, we find pairing between the two quasi-particles. We investigate the dynamical stability of such pairs, and comment on the possible applications to models of HTSC.

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Full text: http://www.ma.hw.ac.uk/~chris/HubDav.pdf


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