Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Breit-Wigner distribution, quantum beats and GSI Anomaly   The relationship between Breit-Wigner distribution as an underlying basis for
decaying unstable quantum systems and GSI experiment (anomaly) has not been
addressed properly in the literatures. We show that quantum beats can be
obtained using a superposition of two Breit-Wigner distributions. This modified
distribution can explain the GSI time anomaly with quantum beats resulting from
the existence of two energy levels of the decaying ion.

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg