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Avoided crossing
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Branches of physics
Quantum theory
Bloch's theorem
Electronic band structure
Energy band
Band gap
Created
2026-10-03
Updated
2026-10-18
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An
avoided crossing
occurs when two
parameter
-dependent
eigenvalues
approach one another but an interaction prevents equality. Near
a
two-level crossing,
a
nonzero off-
diagonal
matrix element
opens
a
positive minimum gap.
Ancestors
(8)
Band gap
Energy band
Electronic band structure
Bloch's theorem
Quantum theory
Branches of physics
Physics
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