PED
发表于 2025-3-21 17:22:11
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微枝末节
发表于 2025-3-21 22:21:24
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王得到
发表于 2025-3-22 01:53:23
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Vasoconstrictor
发表于 2025-3-22 06:17:17
Consistent Histories and Decoherence,he “relevant” or “distinguished” part) and its environment (called the “irrelevant” or “ignored” part). Provided certain initial conditions hold, “coarse-graining” with respect to the irrelevant degrees of freedom may lead to the emergence of classical behaviour in the relevant part, since (almost)
争吵
发表于 2025-3-22 09:23:57
Superselection Rules and Symmetries,nd complement some of these issues. In doing that we shall deviate from the notions of Chap. 2 insofar as we identify pure states with rays . by Hilbert space vectors, but not with the vectors themselves. This will make a difference in the discussion of symmetries where, when states are given by ray
Classify
发表于 2025-3-22 12:58:50
Open Quantum Systems,erse. The notion of an isolated system makes sense only as an approximation depending on the concrete situation. This point of view has been emphasized in the preceding chapters as the basis of the whole book. This chapter presents a selfcontained discussion of the dynamics of a subsystem (including
Classify
发表于 2025-3-22 19:27:03
Stochastic Collapse Models,ected with uncontrollable environments. In contrast to this approach we are concerned in this chapter with models which postulate non-hamiltonian dynamics as a fundamental modification of the Schrödinger equation. Without aiming at a comprehensive review we shall try to discuss the conceptual settin
Conclave
发表于 2025-3-23 00:46:00
Book 19961st editionnderstood theoretically, as well as widely reported in the literature. The major consequences of decoherence are the emergence of "classicality" in general, superselection rules, the border line between microscopic and macroscopic behavior in molecules and field theory, the emergence of classical sp
CHURL
发表于 2025-3-23 01:52:06
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engender
发表于 2025-3-23 05:53:21
Open Quantum Systems, the Markovian approximation). The resulting equations are then formally identical with stochastic modifications of the Schrödinger equation which have been proposed by some authors as . modifications of the Hamiltonian dynamics and which will be discussed in Chap. 8.