Homogeneous Decoherence Functionals¶in Standard and History Quantum Mechanics
نویسندگان
چکیده
منابع مشابه
Homogeneous decoherence functionals in standard and history quantum mechanics
General history quantum theories are quantum theories without a globally defined notion of time. Decoherence functionals represent the states in the history approach and are defined as certain bivariate complex-valued functionals on the space of all histories. However, in practical situations – for instance in the history formulation of standard quantum mechanics – there often is a global time ...
متن کاملQuantum Mechanics, and Decoherence
State-reduction and the notion of actuality are compared to passagethrough time and the notion of the present; already in classical relativity the latter give rise to di¢ culties. The solution proposed here is to treat both tense and value-de niteness as relational properties or facts as relations; likewise the notions of change and probability. In both cases essential characteristics...
متن کاملIntrinsic decoherence in quantum mechanics.
A model for intrinsic decoherence in quantum mechanics is proposed, based on a simple modification of unitary Schrodinger evolution. On sufticiently small time scales the system evolves by a random sequence of unitary phase changes generated by the Hamiltonian. The Schrodinger equation is obtained to zeroth order in the expansion parameter. Higher-order corrections lead to a loss of coherence i...
متن کاملDecoherence and the foundations of quantum mechanics
This is an introduction to decoherence with an emphasis on the foundational and conceptual aspects of the theory. It explores the extent to which decoherence suggests a solution to the measurement problem, and evaluates the role of decoherence in several different interpretations of quantum mechanics. [This paper is essentially a short version of: M. Schlosshauer, “Decoherence, the measurement ...
متن کاملEnvironment-induced Decoherence in Noncommutative Quantum Mechanics
We address the question of the appearence of ordinary quantum mechanics in the context of noncommutative quantum mechanics. We obtain the noncommutative extension of the Hu-Paz-Zhang master equation for a Brownian particle linearly coupled to a bath of harmonic oscillators. We consider the particular case of an Ohmic regime.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 1999
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s002200050645