Hilbert Modules in Quantum Electro Dynamics and Quantum Probability
Hilbert Modules in Quantum Electro Dynamics and Quantum Probability
复制标题
量子电动力学和量子概率中的希尔伯特模块
DOI:
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发表时间:
1998
期刊:
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通讯作者:
Michael Skeide
中科院分区:
文献类型:
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作者:
Michael Skeide
Abstract:A physical system of the form with a distinguished state on may be described in a natural way on a Hilbert -module. Following the ideas of Accardi and Lu [1], we apply this possibility to a concrete system consisting of a boson field in the vacuum state coupled to a free electron.We show that the physical system is described adequately on a new type of Fock module: the symmetric Fock module. It turns out that a module has to fulfill an algebraic condition in order to allow for the construction of a symmetric Fock module.We prove in a central limit theorem that in the stochastic limit the moments of the collective operators (i.e. more or less the time-integrated interaction Hamiltonian) converge to the moments of free creators and annihilators on a full Fock module. In the sense of Voiculescu [22] and Speicher [20] these operators form a free white noise over the algebra .