Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-avoiding walks adsorbed at a surface and pulled at their mid-point   We consider a self-avoiding walk on the $d$-dimensional hypercubic lattice,
terminally attached to an impenetrable hyperplane at which it can adsorb. When
a force is applied the walk can be pulled off the surface and we consider the
situation where the force is applied at the middle vertex of the walk. We show
that the temperature dependence of the critical force required for desorption
differs from the corresponding value when the force is applied at the end-point
of the walk. This is of interest in single molecule pulling experiments since
it shows that the required force can depend on where the force is applied. We
also briefly consider the situation when the force is applied at other interior
vertices of the walk.

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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
3
The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
7
The categories of this paper are: hep-th