Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the invariance of the relative rest in doubly special relativity   In the framework of the most-studied doubly special relativity models the use
of the naive formula $v=dE/dp$ has been argued to lead to inconsistencies
connected to different rules of transformation, under boosts, of particles with
the same energy but with different masses. In this paper we show that, at least
in 1+1 dimensions, doubly special relativity can be formulated in such a way
that the formula $v=dE/dp$ is fully consistent with the invariance of the
relative rest, easily fitting to the relativity principle. It is also argued
that, always in 1+1d, is not necessary to renounce to the usual (commutative)
Minkowski space-time endowed with energy-independent boost transformations. The
compatibility of the approach with superluminal propagation, with linear
addition rule for energy, and possible extensions to 3+1 dimensions are also
discussed.

16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn