Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativity of Motion in Vacuum   The existence of vacuum fluctuations leads to reconsider the question of
relativity of motion. The present article is devoted to this aim with a main
line which can be formulated as follows: ``The principle of relativity of
motion is directly related to symmetries of quantum vacuum''. Keeping close to
this statement, we discuss the controversial relation between vacuum and
motion. We introduce the question of relativity of motion in its historical
development before coming to the results obtained more recently.

37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math