The old quantum theory is a collection of results from the years 1900–1925 which predate modern quantum mechanics. The theory was never complete or self-consistent...

of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science. Quantum mechanics...

photoelectric effect, solar emission spectra—an era called the Old or Older quantum theories. Building on the technology developed in classical mechanics...

up quantum theory in Wiktionary, the free dictionary. Quantum theory may refer to: Quantum mechanics, a major field of physics Old quantum theory, predating...

of quantum theory is that the predictions it makes are probabilistic. The procedure for finding a probability involves combining a quantum state, which...

theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics.: xi ...

collapse is explained by the mechanism of quantum decoherence. Decoherence approaches to interpreting quantum theory have been widely explored and developed...

superseding or replacing quantum theory should account for such experiments and therefore cannot fulfill local realism; quantum nonlocality is a property...

non-commutativity of operators representing quantum observables. Prior to the development of quantum mechanics as a separate theory, the mathematics used in physics...

physics, a hidden-variable theory is a deterministic physical model which seeks to explain the probabilistic nature of quantum mechanics by introducing...