Thermodynamic Bethe Ansatz and generalised hydrodynamics in the sine-Gordon model
Thermodynamic Bethe Ansatz and generalised hydrodynamics in the sine-Gordon model
复制标题
正弦戈登模型中的热力学 Bethe Ansatz 和广义流体动力学
DOI:
10.21468/scipostphys.16.6.145
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发表时间:
2023
期刊:
影响因子:
5.5
通讯作者:
M´arton Kormos
中科院分区:
文献类型:
--
作者:
B. Nagy;Gábor Takács;M´arton Kormos
We set up a hydrodynamic description of the non-equilibrium dynamics of sine-Gordon quantum field theory for generic coupling. It is built upon an explicit form of the Bethe Ansatz description of general thermodynamic states, with the structure of the resulting coupled integral equations encoded in terms of graphical diagrams. The resulting framework is applied to derive results for the Drude weights of charge and energy. Quantities associated with the charge universally have fractal dependence on the coupling, which is notably absent from those associated with energy, a feature explained by the different roles played by reflective scattering in transporting these quantities. We then present far-from-equilibrium results, including explicit time evolution starting from bipartite initial states and dynamical correlation functions. Our framework can be applied to explore numerous other aspects of non-equilibrium dynamics, which opens the way to a wide array of theoretical studies and potential novel experimental predictions.
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通讯作者:
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DOI:
10.1088/1742-5468/ac12c7
发表时间:
2021-08-01
影响因子:
2.4
作者:
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通讯作者:
Ilievski, Enej
影响因子:
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作者:
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