Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Role of local fields in the optical properties of silicon nanocrystals
  using the tight binding approach   The role of local fields in the optical response of silicon nanocrystals is
analyzed using a tight binding approach. Our calculations show that, at
variance with bulk silicon, local field effects dramatically modify the silicon
nanocrystal optical response. An explanation is given in terms of surface
electronic polarization and confirmed by the fair agreement between the tight
binding results and that of a classical dielectric model. From such a
comparison, it emerges that the classical model works not only for large but
also for very small nanocrystals. Moreover, the dependence on size of the
optical response is discussed, in particular treating the limit of large size
nanocrystals.

21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin