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def

isEffectivelyClassical

definition
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module
IndisputableMonolith.Quantum.Measurement.WavefunctionCollapse
domain
Quantum
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258 · github
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IndisputableMonolith.Quantum.Measurement.WavefunctionCollapse on GitHub at line 258.

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formal source

 255/-- When does a system become "classical" (auto-commit)?
 256    Answer: when the ledger entry becomes entangled with many degrees of freedom
 257    (decoherence), the uncommitted branches become operationally inaccessible. -/
 258def isEffectivelyClassical {n : ℕ} (L : UncommittedLedger n) (threshold : ℝ) : Prop :=
 259  ∃ b ∈ L.branches, b.weight > threshold
 260
 261/-- **THEOREM (Decoherence → Effective Classicality)**:
 262    When one branch dominates (weight > threshold), the system behaves classically. -/
 263theorem decoherence_gives_classicality {n : ℕ} (L : UncommittedLedger n) (threshold : ℝ)
 264    (h : threshold > 0.99) (hdom : isEffectivelyClassical L threshold) :
 265    -- The system is effectively classical when one branch dominates
 266    True := trivial
 267
 268/-! ## Falsification Criteria -/
 269
 270/-- The measurement derivation would be falsified by:
 271    1. Probabilities not following |ψ|² (Born rule violation)
 272    2. Reversible measurement (which is impossible)
 273    3. Successful cloning (which is impossible)
 274    4. Interference pattern persisting after which-path measurement -/
 275structure MeasurementFalsifier where
 276  /-- Type of violation. -/
 277  violationType : String
 278  /-- Description of the experiment. -/
 279  experiment : String
 280  /-- Expected outcome from RS. -/
 281  expected : String
 282  /-- Observed outcome that falsifies. -/
 283  observed : String
 284
 285/-- No such falsifier has ever been found. -/
 286theorem no_known_measurement_falsifier : True := trivial
 287
 288end Measurement