量子力學自圓其說嗎？

聽說量子力學中沒有粒子軌道和速度的概念。但有的教科書上講，自由粒子（象電子光子等）除了一個恒定速度外還有一個周期性振動。這是和量子理論基本假設相矛盾的。http://www.cqvip.com/onlineread/onlineread.asp?ID=21922948&SUID=EGBNBFDHDNCBCOPIBOLGEMCBCDOIPNFP#

然而最近實驗報道證實了這種運動。

Phys. Rev. Lett. 105, 143902 (2010)

 Classical Simulation of Relativistic Zitterbewegung in Photonic Lattices

 

Felix Dreisow¹, Matthias Heinrich¹, Robert Keil¹, Andreas Tünnermann¹, Stefan Nolte¹, Stefano Longhi², and Alexander Szameit^1,3,*
1Institute of Applied Physics, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
²Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
³Physics Department and Solid State Institute, Technion, 32000 Haifa, Israel

Received 23 July 2010; revised 27 August 2010; published 28 September 2010

We present the first experimental realization of an optical analog for relativistic quantum mechanics by simulating the Zitterbewegung (trembling motion) of a free Dirac electron in an optical superlattice. Our photonic setting enables a direct visualization of Zitterbewegung as a spatial oscillatory motion of an optical beam. Direct measurements of the wave packet expectation values in superlattices with tuned miniband gaps clearly show the transition from weak-relativistic to relativistic and far-relativistic regimes.

http://prl.aps.org/abstract/PRL/v105/i14/e143902

通過模擬，光學超晶格中自由電子會有相對論量子顫抖運動。我們的實驗首次證實了這種對應的光子顫抖運動。光子學實驗裝置可直接觀察到光束的空間振蕩（顫抖）運動。

所有跟帖： 

• 量子顫動(德語：Zitterbewegung；英語：jitter/oscillatory movement) -hemorrhoid- ♀ (3009 bytes) () 10/22/2010 postreply 14:48:17