Energy and Momentum

• Classical Physics::

• for particle of mass m and velocity v:

  • Energy E = ½ m v2
  • Momentum p = m v

• Quantum Physics::

  • Tendency field Y(x,t)
  • Governed by the Schrödinger Equation

• Energy: time variation

  • E ? ¶Y(x,t)/¶t

• Momentum: spatial variation

  • p ? ¶Y(x,t)/¶x

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