Shear viscosity in a non-Fermi-liquid phase of a quadratic semimetal

Philipp T. Dumitrescu

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Shear viscosity in a non-Fermi-liquid phase of a quadratic semimetal

机译：二次半金属在非费米液相中的剪切粘度

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We study finite temperature transport in the Luttinger-Abrikosov-Beneslavskii phase-an interacting, scale invariant, non-Fermi-liquid phase found in quadratic semimetals. We develop a kinetic equation formalism to describe the dc transport properties, which are dominated by collisions, and compute the shear viscosity η. The ratio of shear viscosity to entropy density η/s is a measure of the strength of interaction between the excitations of a quantum fluid. As a consequence of the quantum critical nature of the system, η/s is a universal number and we find it to be consistent with a bound proposed from gauge-gravity duality.

机译：我们研究了Luttinger-Abrikosov-Beneslavskii相中的有限温度传输，该相是在二次半金属中发现的相互作用的，尺度不变的，非费米液相。我们建立了动力学方程式来描述由碰撞控制的直流输运特性，并计算剪切粘度η。剪切粘度与熵密度η/ s之比是量子流体激发之间相互作用强度的度量。由于系统的量子临界性质，η/ s是一个通用数，我们发现它与规范重力对偶性提出的界线是一致的。

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来源
《Physical review》 |2015年第12期|121102.1-121102.5|共5页
作者
Philipp T. Dumitrescu;
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Department of Physics, University of California, Berkeley, California 94720, USA;

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正文语种 eng
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quantum transport; non-fermi-liquid ground states, electron phase diagrams and phase transitions in model systems; electronic transport in mesoscopic systems;

机译：量子传输模型系统中的非费米液体基态;电子相图和相变;介观系统中的电子传输;

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7. Shear Viscosity in a Non-Fermi Liquid Phase of a Quadratic Semimetal [O] . Dumitrescu, Philipp T. 2015

机译：二次半金属的非费米液相中的剪切粘度

Shear viscosity in a non-Fermi-liquid phase of a quadratic semimetal

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