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arXiv 0709.3424cond-mat.str-el
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晶格激子-极化子问题的量子蒙特卡罗模拟

Lattice exciton-polaron problem by quantum Monte Carlo simulations

Martin Hohenadler, Peter B. Littlewood, Holger Fehske

摘要:

用量子蒙特卡罗模拟研究了一维晶格模型中激子-极化子的形成过程。根据电子和空穴-声子耦合的相对符号,激子-极化子尺寸随相互作用强度的增加而增加或减小。量子声子涨落决定(激子)极化子的大小,并在所有有限耦合产生双折射不变状态。

英文摘要:

Exciton-polaron formation in one-dimensional lattice models with short or long-range carrier-phonon interaction is studied by quantum Monte Carlo simulations. Depending on the relative sign of electron and hole-phonon coupling, the exciton-polaron size increases or decreases with increasing interaction strength. Quantum phonon fluctuations determine the (exciton-)polaron size and yield translation-invariant states at all finite couplings.

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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