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Nonequilibrium Quantum Systems: Divergence between Global and Local Descriptions
المؤلفون المشاركون
Manrique, Pedro D.
Rodríguez, Ferney
Quiroga, Luis
Johnson, Neil F.
المصدر
Advances in Condensed Matter Physics
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-7، 7ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-02-23
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Even photosynthesis—the most basic natural phenomenon underlying life on Earth—involves the nontrivial processing of excitations at the pico- and femtosecond scales during light-harvesting.
The desire to understand such natural phenomena, as well as interpret the output from ultrafast experimental probes, creates an urgent need for accurate quantitative theories of open quantum systems.
However it is unclear how best to generalize the well-established assumptions of an isolated system, particularly under nonequilibrium conditions.
Here we compare two popular approaches: a description in terms of a direct product of the states of each individual system (i.e., a local approach) versus the use of new states resulting from diagonalizing the whole Hamiltonian (i.e., a global approach).
The main difference lies in finding suitable operators to derive the Lindbladian and hence the master equation.
We show that their equivalence fails when the system is open, in particular under the experimentally ubiquitous condition of a temperature gradient.
By solving for the steady state populations and calculating the heat flux as a test observable, we uncover stark differences between the formulations.
This divergence highlights the need to establish rigorous ranges of applicability for such methods in modeling nanoscale transfer phenomena—including during the light-harvesting process in photosynthesis.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Manrique, Pedro D.& Rodríguez, Ferney& Quiroga, Luis& Johnson, Neil F.. 2015. Nonequilibrium Quantum Systems: Divergence between Global and Local Descriptions. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1052289
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Manrique, Pedro D.…[et al.]. Nonequilibrium Quantum Systems: Divergence between Global and Local Descriptions. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1052289
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Manrique, Pedro D.& Rodríguez, Ferney& Quiroga, Luis& Johnson, Neil F.. Nonequilibrium Quantum Systems: Divergence between Global and Local Descriptions. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1052289
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1052289
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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