Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum mechanics without statistical postulates   The Bohmian formulation of quantum mechanics is used in order to describe the
measurement process in an intuitive way without a reduction postulate in the
framework of a deterministic single system theory. Thereby the motion of the
hidden classical particle is chaotic during almost all nontrivial measurement
processes. For the correct reproduction of experimental results, it is further
essential that the distribution function $P(x)$ of the results of a position
measurement is identical with $|\Psi|^2$ of the wavefunction $\Psi$ of the
single system under consideration. It is shown that this feature is not an
additional assumption, but can be derived strictly from the chaotic motion of a
single system during a sequence of measurements, providing a completely
deterministic picture of the statistical features of quantum mechanics.

4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int