Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Violation of CPT and Quantum Mechanics in the K0--K0bar System   We reconsider the model of quantum mechanics violation in the $\ko$--$\kob$
system, due to Ellis, Hagelin, Nanopoulos, and Srednicki, in which \cp- and
\cpt-violating signatures arise from the evolution of pure states into mixed
states. We present a formalism for computing time-dependent asymmetries in this
model and show that present data constrains its parameters significantly. In
the future, this model will be put to very stringent tests at a $\phi$ factory.
We present the theory of these tests and show the relation between particular
$\phi$ decay correlations and the parameters of quantum mechanics violation.

8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th