For obvious reasons the only quantum degrees of freedom available to atoms in a solid are vi- brational. A many-body system is most eas- ily described in terms of quantum field theory, and in quantum field theory, the collective ex- citation of a system of quantum vibrators is a boson. What is this boson called, for solids?
1. hopon. . 3. wagon. 4. phonon.
5. jiggleon.
Solution
PHONON - A phonon is the quantum mechanical description of an elementary vibrational motion in which a lattice of
atoms or molecules uniformly oscillates at a single frequency.
or we can say that Phonon is a unit of vibrational energy that arises from oscillating atoms within a crystal.
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For obvious reasons the only quantum degrees of freedom available to a.docx
1. For obvious reasons the only quantum degrees of freedom available to atoms in a solid are vi-
brational. A many-body system is most eas- ily described in terms of quantum field theory, and
in quantum field theory, the collective ex- citation of a system of quantum vibrators is a boson.
What is this boson called, for solids?
1. hopon. . 3. wagon. 4. phonon.
5. jiggleon.
Solution
PHONON - A phonon is the quantum mechanical description of an elementary vibrational
motion in which a lattice of
atoms or molecules uniformly oscillates at a single frequency.
or we can say that Phonon is a unit of vibrational energy that arises from oscillating atoms within
a crystal.
