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Short-Lived Lattice Quasiparticles for Strongly Interacting Fluids

التفاصيل البيبلوغرافية
العنوان: Short-Lived Lattice Quasiparticles for Strongly Interacting Fluids
المؤلفون: Miller Mendoza Jimenez, Sauro Succi
المصدر: Entropy, Vol 17, Iss 9, Pp 6169-6178 (2015)
بيانات النشر: MDPI AG, 2015.
سنة النشر: 2015
المجموعة: LCC:Science
LCC:Astrophysics
LCC:Physics
مصطلحات موضوعية: strongly coupled fluids, Lattice Boltzmann, quantum fluids, Science, Astrophysics, QB460-466, Physics, QC1-999
الوصف: It is shown that lattice kinetic theory based on short-lived quasiparticles proves very effective in simulating the complex dynamics of strongly interacting fluids (SIF). In particular, it is pointed out that the shear viscosity of lattice fluids is the sum of two contributions, one due to the usual interactions between particles (collision viscosity) and the other due to the interaction with the discrete lattice (propagation viscosity). Since the latter is negative, the sum may turn out to be orders of magnitude smaller than each of the two contributions separately, thus providing a mechanism to access SIF regimes at ordinary values of the collisional viscosity. This concept, as applied to quantum superfluids in one-dimensional optical lattices, is shown to reproduce shear viscosities consistent with the AdS-CFT holographic bound on the viscosity/entropy ratio. This shows that lattice kinetic theory continues to hold for strongly coupled hydrodynamic regimes where continuum kinetic theory may no longer be applicable.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1099-4300
Relation: http://www.mdpi.com/1099-4300/17/9/6169; https://doaj.org/toc/1099-4300
DOI: 10.3390/e17096169
URL الوصول: https://doaj.org/article/9aadb08aa77045c58a3c5db69647a1b4
رقم الانضمام: edsdoj.9aadb08aa77045c58a3c5db69647a1b4
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:10994300
DOI:10.3390/e17096169