Abstract

We examine quantal corrections to the dynamics and statistical mechanics of classical sine-Gordon ø-particles (solitons) in weakly-pinned quasi-one- dimensional charge-density-wave condensates at low temperatures. We find that (i) the motion of the quantum ø-particle is governed by Schrödinger's equation, and (ii) the sine-Gordon system at low temperatures can be regarded as a low-density “ideal gas” of ø-particles, anti-ø-particles, phase phonons, and bound pairs of ø- and anti-ø-particles.

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