Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-universal Casimir forces at Bose-Einstein condensation of an ideal
  gas: effect of Dirichlet boundary conditions   We analyze the Casimir forces for an ideal Bose gas enclosed between two
infinite parallel walls separated by the distance D. The walls are
characterized by the Dirichlet boundary conditions. We show that if the
thermodynamic state with Bose-Einstein condensate present is correctly
approached along the path pertinent to the Dirichlet b.c. then the leading term
describing the large-distance decay of thermal Casimir force between the walls
is 1/D^2 with a non-universal amplitude. The next order correction is lnD/D^3.
These observations remain in contrast with the decay law for both the periodic
and Neumann boundary conditions for which the leading term is 1/D^3 with a
universal amplitude. We associate this discrepancy with the non-zero
D-dependent positive value of the one-particle ground state energy in the case
of Dirichlet boundary conditions.

33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph