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Open Quantum Systems Decoherence
Finite-Memory Extension of Tegmark's Decoherence Bound in Biological Media
arXiv
Authors: Ramandeep Dewan
Year
2026
Paper ID
3942
Status
Preprint
Abstract Read
~2 min
Abstract Words
82
Citations
N/A
Abstract
Tegmark's decoherence bound is derived under the assumption of a strictly memoryless environment. We show that this result corresponds to the singular limit of a finite-memory theory. For exponentially correlated environments decoherence is generically quadratic at short times and the decoherence time scales as the square root of the bath correlation time. For the Ornstein-Uhlenbeck bath we derive the exact non-Markovian coherence equation and verify the predicted scaling using an exact pseudomode mapping. Tegmark's bound is recovered only in the vanishing-memory limit.
Why This Paper Matters
- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
- It adds a 2026 reference point for readers tracking recent quantum research.
- Tegmark's decoherence bound is derived under the assumption of a strictly memoryless environment.
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