Quasiparticle kinetic theory for Calogero models
Quasiparticle kinetic theory for Calogero models
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Calogero 模型的准粒子动力学理论
DOI:
10.1088/1751-8121/ac2f8e
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Cao, Xiangyu
中科院分区:
文献类型:
--
作者:
Bulchandani, Vir B;Kulkarni, Manas;Moore, Joel E;Cao, Xiangyu
We show that the quasiparticle kinetic theory for quantum and classical Calogero models reduces to the free-streaming Boltzmann equation. We reconcile this simple emergent behaviour with the strongly interacting character of the model by developing a Bethe–Lax correspondence in the classical case. This demonstrates explicitly that the freely propagating degrees of freedom are not bare particles, but rather quasiparticles corresponding to eigenvectors of the Lax matrix. We apply the resulting kinetic theory to classical Calogero particles in external trapping potentials and find excellent agreement with numerical simulations in all cases, both for harmonic traps that preserve integrability and exhibit perfect revivals, and for anharmonic traps that break microscopic integrability. Our framework also yields a simple description of multi-soliton solutions in a harmonic trap, with solitons corresponding to sharp peaks in the quasiparticle density. Extensions to quantum systems of Calogero particles are discussed.
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DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2018
期刊:
Chaos, Solitons & Fractals
影响因子:
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作者:
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1988
期刊:
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作者:
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DOI:
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发表时间:
2000
期刊:
影响因子:
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作者:
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通讯作者:
P. Choquard
影响因子:
3.7
作者:
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通讯作者:
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