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Scalar field equation in Robertson-Walker space-time
Springer Science and Business Media LLC - Tập 36 - Trang 1387-1394 - 1997
The quantization of the scalar field is reconsidered in some of its basic elements in the context of the Robertson-Walker space-time. The integration of the generalized Klein-Gordon equation is performed by preliminary separation of the equation with the usual separation method. The orthonormal mode solutions are determined by the explicit integration of the resulting angular and radial equations ...... hiện toàn bộ
Control of a Nonlocal Entanglement in the Micromaser via Two Quanta Non-Linear Processes Induced by Dynamic Stark Shift
Springer Science and Business Media LLC - Tập 48 - Trang 545-567 - 2008
We show that, under certain conditions, the micromaser can act as an effective source of highly correlated atoms. It is possible to create an extended robust entanglement between two successive, initially unentangled atoms passing through a cavity filled with a nonlinear medium taking into consideration a slight level shift. Information is transfered from the cavity to the atoms in order to build ...... hiện toàn bộ
Distribution of the Generalized Correlated Coherence in Tripartite Systems
Springer Science and Business Media LLC - Tập 59 - Trang 3635-3639 - 2020
The generalized correlated coherence is not stored locally, but does exist within the correlations between subsystems. We show that, in tripartite quantum systems, the generalized correlated coherence obeys the polygamy relation when the used coherence measure is strong subadditive. We further provide a sufficient condition, on which the generalized correlated coherence monogamy inequalities hold....... hiện toàn bộ
Criteria for SLOCC and LU Equivalence of Generic Multi-qudit States
Springer Science and Business Media LLC - Tập 62 - Trang 1-14 - 2022
In this paper, we study the stochastic local operation and classical communication (SLOCC) and local unitary (LU) equivalence for multi-qudit states by mode-n matricization of the coefficient tensors. We establish a new scheme of using the CANDECOMP/PARAFAC (CP) decomposition of tensors to find necessary and sufficient conditions between the mode-n unfolding and SLOCC&LU equivalence for pure multi...... hiện toàn bộ
Limit of Classical Projections of Quantum Mechanics as ℏ → 0
Springer Science and Business Media LLC - Tập 37 - Trang 2923-2934 - 1998
The convergence of the Hamiltonians of classicalprojections to the Hamiltonian of the classical limit isinvestigated. The convergence of dynamics is shown forHamiltonians generated by a certain class of functions, in particular by functions fromthe Schwartz space.
An Operational Characterization for Optimal Observation of Potential Properties in Quantum Theory and Signal Analysis
Springer Science and Business Media LLC - - 2008
Approximately straight kink theories
Springer Science and Business Media LLC - Tập 18 - Trang 715-723 - 1979
A precise meaning is given to the idea of a kink theory approximating a vectoror vector-bundle-valued theory. It is shown that vector theories taking values in a vector bundle with groupSO(n-
s,s;ℝ), acting naturally, do not approximate any kink theory. It is further shown that, where a kink theory is approximated by a vector bundle theory, the field equations in the vector theory can give rise to...... hiện toàn bộ
Dissipative Systems and Objective Description: Quantum Brownian Motion as an Example
Springer Science and Business Media LLC - Tập 43 - Trang 1515-1525 - 2004
A structure of generator of a quantum dynamical semigroup for the dynamics of a test particle interacting through collisions with the environment is considered, which has been obtained from a microphysical model. The related master-equation is shown to go over to a Fokker–Planck equation for the description of Brownian motion at quantum level in the long wavelength limit. The structure of this Fok...... hiện toàn bộ
Geometric Phase in a Generalized Time-Dependent Jaynes-Cummings Model
Springer Science and Business Media LLC - Tập 47 - Trang 2237-2242 - 2008
By using the Lewis–Riesenfeld invariant theory, we have studied the dynamical and the geometric phases in a generalized time-dependent Jaynes-Cummings model. It is found that the geometric phases in a cycle case have nothing to do with the frequency of the electromagnetic wave, the energy difference between two levels of the atom, and the coupling strength between the atom and the light field.
Interpreting Quantum Particles as Conceptual Entities
Springer Science and Business Media LLC - Tập 49 - Trang 2950-2970 - 2010
We elaborate an interpretation of quantum physics founded on the hypothesis that quantum particles are conceptual entities playing the role of communication vehicles between material entities composed of ordinary matter which function as memory structures for these quantum particles. We show in which way this new interpretation gives rise to a natural explanation for the quantum effects of interfe...... hiện toàn bộ
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