Long-lived and Large-coherence Length Excitations in the DNA Double Helix
We discuss the lifetime and mean free path or coherence length of vibrational modes of the DNA double helix in the light of recent calculations and experimental observations. The helix is essentially a long polyion and we consider the range of forces along the helix that are important in determining the vibrational mode behavior. The factors that are likely responsible for the observed long lifetimes and large coherence lengths are reviewed.
KeywordsCoherence Length Double Helix Acoustic Mode Soft Mode Acoustic Velocity
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