Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Feynman Path Integral of a charged anisotropic HO in crossed electric
  and magnetic fields. Alternative calculational methods   In the present paper the author evaluates the path integral of a charged
anisotropic Harmonic Oscillator (HO) in crossed electric and magnetic fields by
two alternative methods. Both methods enable a rather formal calculation and
circumvent some mathematical delicate issues such as the occurrence of an
infinite Normalization constant and ambiguities with path integral calculations
when magnetic fields are present. The \emph{$1^{\text{st}}$} method uses
complex Fourier series and a regularization scheme via the
Riemann-$\zeta$-function. The \emph{$2^{\text{nd}}$} method evaluates the path
integral by transforming the Lagrangian to a uniformly rotating system. The
latter method uses the fact that the Lorentz- and Coriolis force have the same
functional form. Both forces cancel each other within the rotating system given
that it rotates with Larmor frequency $\omega_{L}$. This fact simplifies
considerably the calculation of the path integral.

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The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom