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تسجيل مستخدم جديدAn analytical relation between entropy production and quantum Lyapunov exponents for Gaussian bipartite systems
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نشر من قبل
Leonardo Antonio Mendes de Souza
تاريخ النشر
2007
مجال البحث
فيزياء
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English
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We study and compare the information loss of a large class of Gaussian bipartite systems. It includes the usual Caldeira-Leggett type model as well as Anosov models (parametric oscillators, the inverted oscillator environment, etc), which exhibit instability, one of the most important characteristics of chaotic systems. We establish a rigorous connection between the quantum Lyapunov exponents and coherence loss, and show that in the case of unstable environments coherence loss is completely determined by the upper quantum Lyapunov exponent, a behavior which is more universal than that of the Caldeira-Leggett type model.
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