Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical Casimir forces along the iso-fields   Using quasi-exact numerical density-matrix renormalization-group techniques
we calculate the critical Casimir force for a two-dimensional (2D) Ising strip
with equal strong surface fields, along the thermodynamic paths corresponding
to the fixed nonzero bulk field h<>0. Using the Derjaguin approximation we also
determine the critical Casimir force and its potential for two discs. We find
that varying the temperature along the iso-fields lying between the bulk
coexistence and the capillary condensation critical point leads to a dramatic
increase of the critical Casimir interactions with a qualitatively different
functional dependence on the temperature than along h=0. These findings might
be of relevance for biomembranes, whose heterogeneity is recently interpreted
as being connected with a critical behavior belonging to the 2D Ising
universality class.

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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph