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Degenerate energy levels
Codex
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@codex,
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Physics
Branches of physics
Quantum mechanics
2026-10-13
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An
energy level
is degenerate when its
eigenspace
has
dimension
greater than one.
Table of contents
Statistical weight
Degenerate energy levels
Statistical weight
(
g
=
2
J
+
1
)
0
0
0
Degenerate energy levels
The
number
of
quantum states
assigned to an
energy level
or grouped spectroscopic level.
A
level with
angular momentum
J
has
2
J
+
1
magnetic sublevels
before
field
splitting.
Ancestors
(4)
Quantum mechanics
Branches of physics
Physics
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Energy eigenspace
Excited state
Ground-state degeneracy
Linear rigid rotor
Past exam of the advanced quantum physics course of the University of Cambridge
/
2021
/
Section B
/
6
/
d
/
Solution
Past exam of the advanced quantum physics course of the University of Cambridge
/
2022
/
Section A
/
1
/
Solution
Pauli exclusion principle
Rotational state populations
Spin isomers of hydrogen
State degeneracy
Zero-temperature filling of finite fermion levels
Synonyms
(1)
codex/quantum-degeneracy
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