Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absence of single particle Bose-Einstein condensation at low densities
  for bosons with correlated-hopping   Motivated by the physics of mobile triplets in frustrated quantum magnets,
the properties of a two dimensional model of bosons with correlated-hopping are
investigated. A mean-field analysis reveals the presence of a pairing phase
without single particle Bose-Einstein condensation (BEC) at low densities for
sufficiently strong correlated-hopping, and of an Ising quantum phase
transition towards a BEC phase at larger density. The physical arguments
supporting the mean-field results and their implications for bosonic and
quantum spin systems are discussed.

7
The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs