國立交通大學物理研究所  
本站的內部連結,包含最新消息、本所介紹、本所成員、招生課程暨修業規定、學術研究、網路資源、聯絡我們、回到舊版網站。
NCTU Institute of Physics

最新消息 系所公告 演講公告 招生公告 其他公告 本所介紹 本所成員 招生、課程暨修業規定 學術研究 網路資源 聯絡我們

   
演講公告 MORE
  The Effective Hamiltonian and Ehrenfest Theorem in the Propagation Dynamics of Nonspreading Wave Packets
 

 

演講投影片
 

時間:10月27日(四) 13:20

題目:The Effective Hamiltonian and Ehrenfest Theorem in the Propagation Dynamics of Nonspreading Wave Packets

講者:林其隆 教授

服務單位: 東吳大學 物理學系

地點:本校基礎科學教學研究大樓1樓 157室

對象:本所博士生及碩士生、或其他有興趣之師生

摘要:
We analyze the propagation dynamics of nonspreading wave packets by decomposing the Hamiltonian H into two parts:
H = Hi(t) + Hc(t). The first part Hi (t) is such that Ψ(x; t)
is its instantaneous eigenstate, and is therefore irrelevant to the propagation of the packet.
The second part Hc(t) is shown to be the effective Hamiltonian governing the propagation dynamics
of nonspreading wave packets both quantum mechanically and classically.
The Ehrenfest theorem is thus based on the Hamiltonian Hc(t) connecting quantum mechanics
and classical mechanics. This analysis also works for non-square-integrable packets, such as Airy
packets, and explains why Airy packets can self-accelerate in free space.

Published in CJP 52, P. 1413 (2014)


     
 
最後公告日期: 2016/10/24
聯絡人: 陳俐君 小姐
 
   
  新竹市大學路1001號資訊館3F
1001 Ta Hsueh Road, Hsinchu,
Taiwan 300, ROC
TEL:(03) 5720810
FAX:(03) 5720728
Mail:f641126@mail.nctu.edu.tw
   lcchen@mail.nctu.edu.tw
Copyright (c) NCTU Institute of Physics All rights reserved.
HOME ENGLISH CONTACT US SITEMAP