The ground state in quantum mechanics is always unique
the verdict
REFUTED
the evidence says no
confidence 7/100
The claim that the ground state in quantum mechanics is always unique is refuted by multiple theoretical and physical models, such as supersymmetric systems and frustrated lattices, which frequently exhibit ground-state degeneracy.
Evidence against · 3
On the degeneracy in the ground state of the <i>N</i>=2 Wess–Zumino supersymmetric quantum mechanics
1989 · cited by 11
Paper [0] demonstrates the existence of degenerate zero-energy ground states in supersymmetric quantum mechanical models.
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More against · 2
Ground-state degeneracy of twisted sectors of Conway moonshine SCFT
2025 · cited by 1
Paper [6] calculates ground state degeneracies in twisted sectors of conformal field theories, noting that multiple states can share the ground state energy.
Nanofabrication and investigation of ground state degeneracy in artificial spin ice lattices
cited by 0
Paper [10] investigates systems like artificial spin ice lattices designed specifically to exhibit high ground-state degeneracy.