Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Possible Resolution of the Tolman Paradox as a Quantum Superposition   This is an attempt to find a hidden virtue in Tolman's paradox by showing
that it can give rise to quantum superposition. We consider tachyon exchange
between two particles and show that it can generate superposition of
eigenstates characterizing each particle, as well as the entangled state of the
particle pair. The new possible aspect of quantum superposition reveals an
unexpected connection with cosmological expansion of the Universe.

12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci