An acoustic phonon branch has ω(k)→0 as k→0. Its long-wavelength group velocity is the speed of sound.
Ancestors (9)
- Phonon dispersion relation
- Phonon
- Bose-Einstein distribution
- Bose-Einstein statistics
- Quantum ideal-gas statistics
- Statistical physics
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Incoming links (31)
- Acoustic phonon
- Alternating-spring chain dispersion relation
- Debye T-cubed test
- Diatomic-chain dispersion relation with equal springs
- Einstein solid
- Folded wave-number counting for a monatomic chain
- Monatomic-chain dispersion relation
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- Phonon branch
- Single-phonon neutron scattering model
- Strong-bond limit of the alternating-spring chain
- Ultrasound
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