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YouTube

Group and Phase Velocities of Wave Packets in Quantum Mechanics

For the Love of Physics via YouTube

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Overview

Explore a 44-minute video lecture on the group and phase velocities of wave packets in quantum mechanics. Delve into the fundamental concepts of wave packets, dispersive and non-dispersive media, and the distinctions between group and phase velocities. Learn how group velocity relates to the speed of quantum particles, while phase velocity corresponds to the wavefunction's propagation. Examine the evolution of wave packets as approximations of classical particle trajectories, and understand why phase velocity can exceed the speed of light without violating physical laws. Gain insights into the oscillatory behavior of waves within packets and their significance in quantum mechanical systems.

Syllabus

Introduction to Wave packet
Dispersive & Non-dispersive Medium
Group & Phase velocities
Group Velocity of Particle
Phase Velocity of Particle

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For the Love of Physics

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