Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Screening of a single impurity and Friedel oscillations in Fermi liquids   We numerically study Friedel Oscillations and screening effect around a
single impurity in one- and two-dimensional interacting lattice electrons. The
interaction between electrons is accounted for by using a momentum independent
self-energy obeying the Luttinger theorem. It is observed in one-dimensional
systems that the amplitude of oscillations is systematically damped with
increasing the interaction while the period remains unchanged. The variation of
screening charge with the impurity potential is discussed. We see that the
screening charge is suppressed by the interactions. In case of two-dimensional
systems the surface oscillations around the impurity are more localized with
increasing the interactions.

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The categories of this paper are: stat
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga