Decoherence, einselection, and the quantum origins of the classical
read the original abstract
Decoherence is caused by the interaction with the environment. Environment monitors certain observables of the system, destroying interference between the pointer states corresponding to their eigenvalues. This leads to environment-induced superselection or einselection, a quantum process associated with selective loss of information. Einselected pointer states are stable. They can retain correlations with the rest of the Universe in spite of the environment. Einselection enforces classicality by imposing an effective ban on the vast majority of the Hilbert space, eliminating especially the flagrantly non-local "Schr\"odinger cat" states. Classical structure of phase space emerges from the quantum Hilbert space in the appropriate macroscopic limit: Combination of einselection with dynamics leads to the idealizations of a point and of a classical trajectory. In measurements, einselection replaces quantum entanglement between the apparatus and the measured system with the classical correlation.
This paper has not been read by Pith yet.
Forward citations
Cited by 6 Pith papers
-
Entanglement, Discord, and Residual Coherence in Scalar-Induced Gravitational Waves
Residual anomalous coherence in scalar perturbations imprints on scalar-induced tensor modes, producing a correlated gravitational-wave background with nontrivial covariance and phase structure instead of a simple spe...
-
Quantum Memory in Scalar-Induced Gravitational Waves
Scalar-induced tensor modes inherit anomalous coherence from a decohered two-mode Gaussian scalar state, generating nonzero tensor discord and connected power covariance as probes of primordial quantum memory.
-
Teleocosmology and quantum post-selection
Post-selection on a Chern-Simons soliton in minisuperspace quantum cosmology yields an accelerating trajectory from a free radiation Hamiltonian with zero cosmological constant.
-
Gravitationally Induced Quantum Decoherence of Macroscopic Objects
Gravitational decoherence of macroscopic objects in Newtonian gravity accumulates logarithmically over distances but remains subdominant to collisional decoherence.
-
Krylov Complexity for Open Quantum System: Dissipation and Decoherence
Krylov complexity saturates in the full high-temperature Caldeira-Leggett system, reproduces dissipative features when decoherence is suppressed, shows oscillations when dissipation is suppressed, and remains insensit...
-
Entropy Production from Spin--Vibrational Coupling in Endohedral-Fullerene Qubits Encapsulated in Suspended Carbon Nanotubes
A hybrid open-system model using Wigner functions and Lindblad dynamics shows crossovers in entropy-production regimes driven by spin-phonon coupling in fullerene-CNT hybrids.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.