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Results tagged with symmetry-breaking
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user 48802
In explicit symmetry breaking, the equations of motion of a physical system are variant under the broken symmetry; by contrast, for spontaneous symmetry breaking (SSB), these equations are invariant, but the entire system is not because its vacuum (background) is non-invariant. Further use for the SSB characteristic nonlinear realizations (Goldstone mode), and the group theoretical patterns involved.
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Does the Mermin-Wagner theorem forbid superconductivity in the 2D Hubbard-Model?
"In the 2D Hubbard model (two spatial dimensions) the Mermin-Wagner theorem does not allow a phase transition."
I am quite illiterate concerning this theorem and hearsay. Does the theorem apply to a …
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