Quantum metastability in a class of moving potentials
學年 92
學期 2
出版(發表)日期 2004-04-01
作品名稱 Quantum metastability in a class of moving potentials
著者 Lee, Chung-Chieh; Ho, Choon-Lin
單位 淡江大學物理學系
出版者 College Park: American Physical Society
著錄名稱、卷期、頁數 Physical Review A (Atomic, Molecular, and Optical Physics) 65(2), 022111(8pages)
摘要 In this paper we consider quantum metastability in a class of moving potentials introduced by Berry and Klein. This class of potential has height and width scaled in a specific way so that it can be transformed into a stationary one. While deriving the nondecay probability of the system, we demonstrate that the appropriate technique to use is the less well known method of scattering states. This method is illustrated through two examples, namely, a moving δ-function potential and a moving barrier potential. For expanding potentials, one finds that a small but finite nondecay probability persists at large times. Generalization to scaling potentials of arbitrary shape is briefly outlined.
關鍵字 Mathematical transformations;Potential energy;Probability;Scattering;Moving potential;Quantum metastability;Schrodinger equation;Quantum theory
語言 en
ISSN 1050-2947
期刊性質 國外
收錄於 SCI
國別 USA
出版型式 紙本

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27752 )