Physical momentum of phonon

Asked Feb 28 '20 at 13:15

Active Feb 28 '20 at 13:35

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I have read in the book 'Introduction to solid state physics' by Kittel that phonons do not carry any physical momentum. But what is the reason for phonons not having any physical momentum?

edited Feb 28 '20 at 13:35

Qmechanic

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asked Feb 28 '20 at 13:15

Soumita

Physical momentum of phonon

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