Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Circular dichroism in nanoparticle helices as a template for assessing
  quantum-informed models in plasmonics   As characteristic lengths in plasmonics rapidly approach the sub-nm regime,
quantum-informed models that can capture those aspects of the quantum nature of
the electron gas that are not accessible by the standard approximations of
classical electrodynamics, or even go beyond the free-electron description,
become increasingly more important. Here we propose a template for comparing
and validating the predictions of such models, through the circular dichroism
signal of a metallic nanoparticle helix. For illustration purposes, we compare
three widely used models, each dominant at different nanoparticle separations
and governed by its own physical mechanism, namely the hydrodynamic Drude
model, the generalised nonlocal optical response theory, and the
quantum-corrected model for tunnelling. Our calculations show that indeed, each
case is characterised by a fundamentally distinctive response, always
dissimilar to the predictions of the local optical response approximation of
classical electrodynamics, dominated by a model-sensitive absorptive
double-peak feature. In circular dichroism spectra, the striking differences
between models manifest themselves as easily traceable sign changes rather than
neighbouring absorption peaks, thus overcoming experimental resolution
limitations and enabling efficient evaluation of the relevance, validity, and
range of applicability of quantum-informed theories for extreme-nanoscale
plasmonics.

36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
9
The categories of this paper are: nlin