Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energy band structure and intrinsic coherent properties in two weakly
  linked Bose Einstein Condensates   The energy band structure and energy splitting due to quantum tunneling in
two weakly linked Bose-Einstein condensates were calculated by using the
instanton method. The intrinsic coherent properties of Bose Josephson junction
were investigated in terms of energy splitting. For $E_{C}/E_{J}\ll 1$, the
energy splitting is small and the system is globally phase coherent. In the
opposite limit, $E_{C}/E_{J}\gg 1$, the energy splitting is large and the
system becomes a phase dissipation. Our reslults suggest that one should
investigate the coherence phenomna of BJJ in proper condition such as
$E_{C}/E_{J}\sim 1$.

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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con