Quantum mechanics is a fundamental branch of physics that describes the behavior of matter and energy at the smallest scales—typically at the level of atoms, electrons, photons, and subatomic ...

Quantum mechanics is a probabilistic theory that does not describe individual events. Yet when we perform a single measurement, we find a well-defined outcome. This apparent contradiction, known as ...

ABSTRACT dynamical theory, classical or quantum-mechanical, deals always in the first instance with comparatively simple systems such as planetary systems or atoms, finding even there complications ...

Some technical revolutions enter with drama and a bang, others wriggle unnoticed into our everyday experience. And one of the quietest revolutions of our current century has been the entry of quantum ...

NOT so long ago, statistical mechanics was almost synonymous with the somewhat arid topic of the dynamical theory of gases, but the development of the quantum theory has vastly increased the number of ...