All Questions
Tagged with collective-excitations ferromagnetism
1
question
7
votes
4
answers
810
views
Why does the breaking of a 'continuous' symmetry lead to gapless excitations but not that of a discrete symmetry?
Goldstone theorem, especially in the context of condensed matter physics, can be stated as:
Whenever there is spontaneous breakdown of a continuous global symmetry, the spectrum of the theory ...
- 26.8k