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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the normal condition of sensitiveness in a coherer (disused)
  • n. The process by which a quantum system interacts with its environment in such a way that no interference between states of the system can be observed.

from The Century Dictionary and Cyclopedia

  • n. Decohering action.


First attested 1902 (OED), in the context of electrical engineering, in the sense of the resetting of a coherer. Decoherence is the verbal noun, standing besides decohesion, derived from decohere (also attested from 1902), the de- negative of cohere (17th century). (Wiktionary)


  • A popular interpretation of Quantum Mechanics called "decoherence" is one interpretation where a conscious mind is not an essential component to physics but is a passive spectator.

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  • Whether his idea about gravity causing quantum decoherence is a correct physical theory remains to be seen.

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  • That process is called decoherence, and it happens very fast.

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  • This process of random interactions destroying quantum effects is known as decoherence, because it’s destroying the coherence between the different parts of the photon wavefunction.

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  • The answer is a process called decoherence, which prevents the different branches of the wavefunction from interacting with one another.

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  • As I understand it, decoherence occurs when the wave functions of two possible states of a system become sufficiently different (that is, sufficiently nearly orthogonal, right?) that no interference effects between the two states are observable.

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  • Personally, I am hoping for the first - I rather like the idea of decoherence as a limiting process.

    Humankind’s Basic Picture of the Universe

  • This loss of coherence, appropriately called decoherence, is among other reasons why we perceive everyday objects as separate and not as blurred together.


  • The authors built on two theories called decoherence and quantum Darwinism, both proposed by Los Alamos National Laboratory researcher Wojciech Zurek. - latest science and technology news stories

  • Technological quantum computations apparently require low temperature to avoid "decoherence", disruption of quantum states by thermal energy in the classical (non-quantum) environment.

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    Wallach starts his essay by noting that a growing number of scholars have raised concerns that government policymaking institutions are operating in ways that are provisional at best, possibly bordering on illegitimate: "Caesarism. Government by Deal. Government by Waiver. Kludgeocracy. Lawless law... adhocracy," Wallach writes (providing useful links). He argues, however, that these are all just pieces of a larger puzzle: "The deeper and greater problem is — if I can be forgiven for adding yet another label to the already lengthy list —decoherence."

    Wallach borrows "decoherence" from quantum mechanics, and takes the term to describe the condition where "elements of a system that had been interacting become disconnected from each other, no longer sharing information"

    September 11, 2015