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arXiv 1208.5550cond-mat.str-elcond-mat.mes-hallcond-mat.quant-gas
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强相互作用一维量子液体中声激发的热化

Thermalization of acoustic excitations in a strongly interacting one-dimensional quantum liquid

Jie Lin, K. A. Matveev, M. Pustilnik

摘要:

研究了Luttinger液体中玻色子激发的非弹性衰减。在具有线性激发谱的模型中,衰变率发散。我们发现,这个困难是解决时,组成粒子之间的相互作用是强的,激发光谱是非线性的。虽然在低能量的非线性是弱的,它规范的衰变率的分歧。我们开发了一个理论描述的方法系统的热平衡。典型的弛豫速率与温度的五次方成比例。

英文摘要:

We study inelastic decay of bosonic excitations in a Luttinger liquid. In a model with linear excitation spectrum the decay rate diverges. We show that this difficulty is resolved when the interaction between constituent particles is strong, and the excitation spectrum is nonlinear. Although at low energies the nonlinearity is weak, it regularizes the divergence in the decay rate. We develop a theoretical description of the approach of the system to thermal equilibrium. The typical relaxation rate scales as the fifth power of temperature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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