Completely positive dynamical maps and the neutral kaon system

被引：69
作者：
Benatti, F [1 ]
Floreanini, R [1 ]
机构：
[1] IST NAZL FIS NUCL,SEZ TRIESTE,TRIESTE,ITALY
来源：
NUCLEAR PHYSICS B | 1997年 / 488卷 / 1-2期
关键词：
dynamical semigroups; complete positivity; neutral kaons;
D O I：
10.1016/S0550-3213(96)00712-2
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The evolution of quantum irreversible processes can be effectively described using dynamical semigroups. They involve non-unitary time evolutions of density matrices that are generated by completely positive maps. In the case of the neutral kaon system such an approach leads to a modification of the standard Weisskopf-Wigner evolution, characterized by six phenomenological parameters. Bounds on the magnitude of these parameters could be given using available experimental data. In this respect, it is remarkable that the condition of complete positivity might be put to a precise test in future more refined experiments.
引用
收藏
页码：335 / 363
页数：29
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