Zwitters: particles between quantum and classical

Understand

We describe both quantum particles and classical particles in terms of a classical statistical ensemble, characterized by a probability distribution in phase space.

• By use of a wave function in phase space both can be treated in the same quantum formalism.
• The different dynamics of quantum and classical particles resides then only from different evolution equations for the probability distribution.
• Quantum particles are characterized by a specific choice of observables and time evolution of the probability density.