量子力学自圆其说吗？

听说量子力学中没有粒子轨道和速度的概念。但有的教科书上讲，自由粒子（象电子光子等）除了一个恒定速度外还有一个周期性振动。这是和量子理论基本假设相矛盾的。http://www.cqvip.com/onlineread/onlineread.asp?ID=21922948&SUID=EGBNBFDHDNCBCOPIBOLGEMCBCDOIPNFP#

然而最近实验报道证实了这种运动。

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

通过模拟，光学超晶格中自由电子会有相对论量子颤抖运动。我们的实验首次证实了这种对应的光子颤抖运动。光子学实验装置可直接观察到光束的空间振荡（颤抖）运动。

所有跟帖： 

• 量子颤动(德语：Zitterbewegung；英语：jitter/oscillatory movement) -hemorrhoid- ♀ (3009 bytes) () 10/22/2010 postreply 14:48:17