Wigner entropy below vacuum: physical counterexamples and stability limits

arXiv:2609.13312 · quant-ph · Submitted 2026-09-10 · Read on arXiv

quant-ph

Submitted: 2026-09-10

Updated: 2026-09-24

Terminology

• Wigner function — 7× in this paper · explained in 2 episodes
• Core — 5× in this paper · explained in 2 episodes
• Trace — 3× in this paper · explained in 2 episodes

Sources

• Extending Hudson's theorem to mixed quantum states

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