TOPOLOGICAL SOLITON SUPERSONIC STATES
Topological soliton supersonic states in the bistable molecular chain
with a cubic anharmonic intersite interaction have numerically been studied.
The positive topological soliton (kink) in a symmetric bistable phi-4
system has subsonic continuum and discrete supersonic velocity spectrums.
The kink has only finite number of supersonic velocity values. The soliton
moves without phonon radiation only for these values. The number of
supersonic velocity values increases when the anharmonicity becomes
stronger. Each supersonic kink represents a few of acoustic soliton bound
states. The amplitude sum of these acoustic solitons equals the barrier
width of the phi-4 potential.
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