Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cigar-shaped quarkonia under strong magnetic field   Heavy quarkonia in a homogeneous magnetic field are analyzed by using a
potential model with constituent quarks. To obtain anisotropic wave functions
and corresponding eigenvalues, the cylindrical Gaussian expansion method is
applied, where the anisotropic wave functions are expanded by a Gaussian basis
in the cylindrical coordinates. Deformation of the wave functions and the mass
shifts of the $S$-wave heavy quarkonia ($\eta_c$, $J/\psi$, $\eta_c(2S)$,
$\psi(2S)$ and bottomonia) are examined for the wide range of external magnetic
field. The spatial structure of the wave functions changes drastically as
adjacent energy levels cross each other. Possible observables in heavy-ion
collision experiments and future lattice QCD simulations are also discussed.

20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio