Abstract
Effects of quantum lattice fluctuations on the Peierls dimerization are considered for two neighboring polymer chains, which are modeled individually by the Su, Schrieffer, and Heeger Hamiltonian and coupled by an interchain electron-transfer term. By a functional-integral approach, an equation for the dimerization order parameter is obtained within a one-loop approximation. It is found that the quantum fluctuations are partly suppressed by the interchain coupling and then the system is dimerized for an arbitrary coupling constant and phonon frequency even for the spinless fermion system.
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