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Free keywords:
LINEAR CANONICAL-TRANSFORMATIONS; COHERENT STATES; SQUEEZED STATES;
WIGNER FUNCTIONS; RADIATION-FIELD; ALGEBRAIC VIEW; FLUCTUATIONS;
OSCILLATOR; NOISE; SU(2)Education & Educational Research; Physics;
Abstract:
We present a graphical example of the interaction picture-time evolution. Our aim is to help students understand in a didactic manner the simplicity that this picture provides. Visualizing the interaction picture unveils its advantages, which are hidden behind the involved mathematics. Specifically, we show that the time evolution of a driven harmonic oscillator in the interaction picture corresponds to a local transformation of a phase space-reference frame into the one that is co-rotating with the Wigner function.
