Optical Susceptibilities of Polymers: Current-Current versus Dipole-Dipole Correlation

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dc.creatorXu, Minzhong
dc.creatorSun, Xin
dc.date1999-05-27
dc.date.accessioned2026-07-07T03:13:34Z
dc.date.available2026-07-07T03:13:34Z
dc.descriptionThe static current operator leads to definitional zero frequency divergence and unphysical results in studying nonlinear optical susceptibilities of polymers. A well-defined dipole-dipole correlation is superior to the complicated current-current correlation to solve this problem. As illustrative examples, optical susceptibilities under both SSH and TLM models of trans-(CH)_x are studied. New analytical results are obtained. The reasons of previous improper results are analyzed.
dc.identifierhttps://arxiv.org/abs/cond-mat/9905406
dc.identifierhttp://arxiv.org/abs/cond-mat/9905406
dc.identifierPhys. Lett. A Vol. 257, 215 (1999)
dc.identifierdoi:10.1016/S0375-9601(99)00288-1
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29341
dc.subjectStrongly Correlated Electrons
dc.subjectOptics
dc.titleOptical Susceptibilities of Polymers: Current-Current versus Dipole-Dipole Correlation
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