Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Macroscopic Quantum Tunneling and the "cosmic" Josephson effect   We discuss the possible influence of a cosmic magnetic field on the
macroscopic quantum tunneling process associated, in a cosmological context, to
the decay of the "false vacuum." We find a close analogy with the effects of an
external magnetic field applied to a Josephson junction in the context of
low-temperature/high-temperature superconducting devices.

29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph