Goldstone theorem states every spontaneously broken continuous symmetry produces a massless boson
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Goldstone boson
Goldstone theorem states every spontaneously broken continuous symmetry produces a massless boson
Goldstone bosons arise due to spontaneous symmetry breaking in physical systems. These bosons are characterized by having no mass when the broken symmetry is not explicitly broken.
Example
In BCS superconductivity, Goldstone bosons correspond to the collective excitations of Cooper pairs breaking the U(1) symmetry spontaneously.
Remember this
Understanding Goldstone bosons is crucial for comprehending phenomena in condensed matter physics and quantum field theory.
Text adapted from Wikipedia, licensed under CC BY-SA 4.0.
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