Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intermediate spin approach to the tunneling of nano-magnets   The theory for the quantum tunneling of nano-magnets is developed within the
intermediate spin framework. Periodic magnetic effects are seen to reflect that
associated with a change of flux by a single flux quantum $\Phi_{0}$. Essential
are Schr\"odinger cat wave functions which involve superpositions of different
magnitudes of the applied magnetic field. For systems in which the tunneling
paths are not co-planar the theory leads to essentially complex magnetic fields
although the expectation values of the fields remain real. In general the
ground states correspond to minimal uncertainty squeezed states. The degree of
squeezing depends on the anisotropy parameters.

14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph