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Acoustic phonon as a goldstone mode

  1. Apr 17, 2009 #1
    is there any book discussing goldstone mode?

    i am not very familiar with field theory. Could anyone suggest some books accessible to a non-field-theory theorist?

    i guess the acoustic phonon is a goldstone mode but the optical phonon is not.

    Since a goldstone mode is associated with a broken symmetry and for a N-dim solid, N translational symmetries are broken, there are N and only N acoustic modes.
  2. jcsd
  3. Apr 17, 2009 #2


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  4. Apr 17, 2009 #3
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