Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamic correlations in the highly dilute 2D electron liquid: loss
  function, critical wave vector and analytic plasmon dispersion   Correlations, highly important in low--dimensional systems, are known to
decrease the plasmon dispersion of two-dimensional electron liquids. Here we
calculate the plasmon properties, applying the 'Dynamic Many-Body Theory',
accounting for correlated two-particle--two-hole fluctuations. These dynamic
correlations are found to significantly lower the plasmon's energy. For the
data obtained numerically, we provide an analytic expression that is valid
across a wide range both of densities and of wave vectors. Finally, we
demonstrate how this can be invoked in determining the actual electron
densities from measurements on an AlGaAs quantum well.

22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con