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Электронный каталог: Yukalov, V. I. - Measuring Correlations in Quantum and Statistical Systems
Yukalov, V. I. - Measuring Correlations in Quantum and Statistical Systems
Статья
Автор: Yukalov, V. I.
Laser Physics Letters: Measuring Correlations in Quantum and Statistical Systems
б.г.
ISBN отсутствует
Автор: Yukalov, V. I.
Laser Physics Letters: Measuring Correlations in Quantum and Statistical Systems
б.г.
ISBN отсутствует
На полку
Статья
Yukalov, V.I.
Measuring Correlations in Quantum and Statistical Systems / V.I.Yukalov, E.P.Yukalova. – Text : electronic // Laser Physics Letters. – 2026. – Vol. 23, No. 2. – P. 023001. – URL: https://doi.org/10.1088/1612-202X/ae3e5b.
The survey discusses the problem of measuring correlations in composite quantum and statistical systems. After briefly recalling the standard methods of describing correlations, the emphasis is on the method of correlation indices. The latter method for quantifying the strength of correlations in composite physical systems is sufficiently general allowing for measuring in a unique way the correlation strength in both quantum and statistical systems, for static as well as for dynamic processes. The correlation indices, can be defined for correlation operators, reduced density matrices, and other operators containing information on correlations in the studied composite systems. The correlation indices measure all types of correlations, quantum correlations, such as entanglement, as well as classical correlations. They are applicable for characterizing static as well as dynamical processes. Examples are given of correlation indices for several quantum states and for spin and pseudospin systems. The quantification of correlations in a nonequilibrium system is exemplified by calculating the correlation index for a trapped Bose–Einstein condensate subject to the action of an alternating field.
ОИЯИ = ОИЯИ (JINR)2026
Yukalov, V.I.
Measuring Correlations in Quantum and Statistical Systems / V.I.Yukalov, E.P.Yukalova. – Text : electronic // Laser Physics Letters. – 2026. – Vol. 23, No. 2. – P. 023001. – URL: https://doi.org/10.1088/1612-202X/ae3e5b.
The survey discusses the problem of measuring correlations in composite quantum and statistical systems. After briefly recalling the standard methods of describing correlations, the emphasis is on the method of correlation indices. The latter method for quantifying the strength of correlations in composite physical systems is sufficiently general allowing for measuring in a unique way the correlation strength in both quantum and statistical systems, for static as well as for dynamic processes. The correlation indices, can be defined for correlation operators, reduced density matrices, and other operators containing information on correlations in the studied composite systems. The correlation indices measure all types of correlations, quantum correlations, such as entanglement, as well as classical correlations. They are applicable for characterizing static as well as dynamical processes. Examples are given of correlation indices for several quantum states and for spin and pseudospin systems. The quantification of correlations in a nonequilibrium system is exemplified by calculating the correlation index for a trapped Bose–Einstein condensate subject to the action of an alternating field.
ОИЯИ = ОИЯИ (JINR)2026
