A Necessary Trade-off for Semiclassical Electrodynamics: Accurate Short-Range Coulomb Interactions versus the Enforcement of Causality?
A Necessary Trade-off for Semiclassical Electrodynamics: Accurate Short-Range Coulomb Interactions versus the Enforcement of Causality?
复制标题
半经典电动力学的必要权衡:准确的短程库仑相互作用与因果关系的执行?
DOI:
10.1021/acs.jpclett.8b02309
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Subotnik, Joseph E.
中科院分区:
文献类型:
--
作者:
Li, Tao E.;Chen, Hsing-Ta;Nitzan, Abraham;Sukharev, Maxim;Subotnik, Joseph E.
We investigate two key representative semiclassical approaches for propagating resonant energy transfer (RET) between a pair of electronic two-level systems (donor and acceptor) with coupled Maxwell–Liouville equations. On the one hand, when the electromagnetic (EM) field is treated classically and Coulomb interactions are treated quantum-mechanically, we find that a quantum–classical mismatch leads to a violation of causality, i.e., the acceptor can be excited before the retarded EM field arrives. On the other hand, if we invoke a classical intermolecular Coulomb operator, we find that the energy transfer in the near field loses quantitative accuracy compared with Förster theory, even though causality is strictly obeyed. Thus, our work raises a fundamental paradox when choosing a semiclassical electrodynamics algorithm. Namely, which is more important: Accurate short-range interactions or long-range causality? Apparently, one cannot have one’s cake and eat it too.
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影响因子:
2.9
作者:
Li, Tao E.;Nitzan, Abraham;Subotnik, Joseph E.
通讯作者:
Subotnik, Joseph E.
影响因子:
2.9
作者:
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通讯作者:
THIRUNAMACHANDRAN, T
影响因子:
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作者:
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K. Lindenberg
影响因子:
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影响因子:
2.9
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