Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Plasmons do not go that quantum   We develop a theoretical model of the surface plasmon resonance of metallic
nanospheres in the size range down to the single nanometer size. Within this
model we explicitly show how different microscopic mechanisms, namely
quantization due to size (QSE) and electron spill-out, affect the energy of the
surface plasmon. We demonstrate, that electron spill-out effects, which can
move the surface plasma energy both toward the red or the blue, can be
comparable to or even stronger than QSE. Thus, depending on circumstances, QSE
may only be observed for ultrasmall metal nanoparticles much closer to 1 nm in
size than to 10 nm. Results presented herein are in quantitative agreement with
recent published experimental results for Ag and Au.

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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph