Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Momentum partition between constituents of exotic atoms during laser
  induced tunneling ionization   The tunneling ionization of exotic atoms such as muonic hydrogen, muonium and
positronium in a strong laser field of circular polarization is investigated
taking into account the impact of the motion of the center of mass on the the
tunneling ionization dynamics. The momentum partition between the ionization
products is deduced. The effect of the center of mass motion for the momentum
distribution of the ionization components is determined. The effect scales with
the ratio of the electron (muon) to the atomic core masses and is nonnegligible
for exotic atoms, while being insignificant for common atoms. It is shown that
the electron (muon) momentum shift during the under-the-barrier motion due to
the magnetically induced Lorentz force has a significant impact on the momentum
distribution of the atomic core and depends on the ratio of the electron to the
atomic core masses.

27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn