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The document discusses the concept of wave packets in quantum mechanics, particularly focusing on free particles in one-dimensional motion. It explains how a sinusoidal wave can represent a particle with definite momentum and energy, but is completely delocalized, leading to the formation of localized wave packets through the multiplication of sinusoidal waves by smooth envelope functions, such as Gaussian functions. The evolution of these wave packets over time is analyzed, highlighting effects such as gro

Author

jihu20100721

Language

EN