Physical realization of the Glauber quantum oscillator
More than 30 years ago, Glauber theorized the existence of quantum systems to explain the link between the reversible microscopic and irreversible macroscopic scale. The formulation of such model is based on the so-called “rigged Hilbert space” and include irreversibility as a fundamental principle through the introduction of an inverted harmonic oscillator describing quantum amplifier.
The standard quantum mechanics does not forbid time-travel.… Read the rest