Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalization group approach to the Fr\"ohlich polaron model:
  application to impurity-BEC problem   We develop a renormalization group approach for analyzing Fr\"ohlich polarons
and apply it to a problem of impurity atoms immersed in a Bose-Einstein
condensate of ultra cold atoms. Polaron energies obtained by our method are in
excellent agreement with recent diagrammatic Monte Carlo calculations for a
wide range of interaction strengths. We calculate the effective mass of
polarons and find a smooth crossover from weak to strong coupling regimes.
Possible experimental tests of our results in current experiments with ultra
cold atoms are discussed.

16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th