Prediction of quantum many-body chaos in the protactinium atom

被引：12
|
作者：
Viatkina, A. V. [1 ]
Kozlov, M. G. [2 ,3 ]
Flambaum, V. V. [1 ,4 ]
机构：
[1] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany
[2] Petersburg Nucl Phys Inst, Gatchina 188300, Russia
[3] St Petersburg Electrotech Univ LETI, Prof Popov St 5, St Petersburg 197376, Russia
[4] Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia
来源：
PHYSICAL REVIEW A | 2017年 / 95卷 / 02期
基金：
澳大利亚研究理事会; 俄罗斯基础研究基金会;
关键词：
FINITE FERMI SYSTEMS; STATISTICAL-THEORY; ENERGY-LEVELS; PERTURBATION-THEORY; COMPOUND STATES; CE ATOM; CONFIGURATION-INTERACTION; PARITY NONCONSERVATION; MATRIX-ELEMENTS; ENHANCEMENT;
D O I：
10.1103/PhysRevA.95.022503
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The energy-level spectrum of the protactinium atom (Pa, Z = 91) is simulated with a configuration interaction calculation. Levels belonging to the separate manifolds of a given total angular momentum and parity J(pi) exhibit distinct properties of many-body quantum chaos. Moreover, an extremely strong enhancement of small perturbations takes place. As an example, effective three-electron interaction is investigated and found to play a significant role in the system. Chaotic properties of the eigenstates allow one to develop a statistical theory and predict probabilities of different processes in chaotic systems.
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页数：7
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