Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum depinning of a pancake-vortex from a columnar defect   We consider the problem of the depinning of a weakly driven ($F\ll F_{c}$)
pancake vortex from a columnar defect in a Josephson-coupled superconductor,
where $F$ denotes the force acting on the vortex ($F_{c}$ is the critical
force).
  The dynamics of the vortex is supposed to be of the Hall type. The Euclidean
action $S_{Eucl}(T)$ is calculated in the entire temperature range; the result
is universal and does not depend on the detailed form of the pinning potential.
We show that the transition from quantum to classical behavior is second-order
like with the temperature $T_{c}$ of the transition scaling like $F^{{4}/{3}}.$
Special attention is paid to the regime of applicability of our results, in
particular, the influence of the large vortex mass appearing in the superclean
limit is discussed.

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The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con