Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic lifetime of Dirac plasmons in graphene   Dirac plasmons in a doped graphene sheet have recently been shown to enable
confinement of light to ultrasmall volumes. In this work we calculate the
intrinsic lifetime of a Dirac plasmon in a doped graphene sheet by analyzing
the role of electron-electron interactions beyond the random phase
approximation. The damping mechanism at work is intrinsic since it operates
also in disorder-free samples and in the absence of lattice vibrations. We
demonstrate that graphene's sublattice-pseudospin degree of freedom suppresses
intrinsic plasmon losses with respect to those that occur in ordinary
two-dimensional electron liquids. We relate our findings to a microscopic
calculation of the homogeneous dynamical conductivity at energies below the
single-particle absorption threshold.

37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an