SHORT-TIME BEHAVIOR OF UNSTABLE SYSTEMS IN-FIELD THEORY AND PROTON DECAY

被引：51

作者：

BERNARDINI, C

MAIANI, L

TESTA, M

机构：

[1] Dipartimento di Fisica, Universitá di Roma La Sapienza, Sezione Istituto Nazionale di Fisica Nucleare di Roma, 00185 Roma

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.71.2687

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The short-time behavior of an unstable particle is examined in a realistic field theoretical model. The onset of linear decreasing of the nondecay probability is shown to be extremely rapid, so rapid as to exclude any relevance of regimes quadratic in time (''Zeno'' quantum paradox). The result applies to super-renormalizable, renormalizable, and nonrenormalizable cases, particularly to the proton decay problem. We discuss also the deviations from the exponential decay law in small-Q-value decays.

引用

页码：2687 / 2690

页数：4

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