Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bohm's quantum "non-mechanics": An alternative quantum theory with its
  own ontology?   The ontological aspect of Bohmian mechanics, as a hidden-variable theory that
provides us with an objective description of a quantum world without observers,
is widely known. Yet its practicality is getting more and more acceptance and
relevance, for it has proven to be an efficient and useful resource to tackle,
explore, describe and explain such phenomena. This practical aspect emerges
precisely when the pragmatic application of the formalism prevails over any
other interpretational question, still a matter of debate and controversy. In
this regard, the purpose here is to show and discuss how Bohmian mechanics
emphasizes in a natural manner a series of dynamical features difficult to find
out through other quantum approaches. This arises from the fact that Bohmian
mechanics allows us to establish a direct link between the dynamics exhibited
by quantum systems and the local variations of the quantum phase associated
with their state. To illustrate these facts, simple models of two physically
insightful quantum phenomena have been chosen, namely, the dispersion of a free
Gaussian wave packet and Young-type two-slit interference. As it is shown, the
outcomes from their analysis render a novel, alternative understanding of the
dynamics displayed by these quantum phenomena in terms of the underlying local
velocity field that connects the probability density with the quantum flux.
This field, nothing but the so-called guidance condition in standard Bohmian
mechanics, thus acquires a prominent role to understand quantum dynamics, as
the mechanism responsible for such dynamics. This goes beyond the passive role
typically assigned to this field in Bohmian mechanics, where traditionally
trajectories and quantum potentials have received more attention instead.

19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom