Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Localization-delocalization transition of a polaron near an impurity   We solve the problem of polaron localization on an attractive impurity by
means of direct-space Diagrammatic Monte Carlo implemented for the system in
the thermodynamic limit. In particular we determine the ground state phase
diagram in dependence on the electron-phonon coupling and impurity potential
strength for the whole phonon frequency range. Including the quantum phonon
dynamics we find and characterize a new phase which is missing in the zero
phonon-frequency limit (adiabatic approximation), where self-trapped polarons
are not localized at shallow impurities. We predict and show that in the
vicinity of the localization transition a region with a mixture of weak- and
strong-coupling spectral response is realized.

27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin