Quantum chemists have recorded a huge number of data points which standard quantum mechanics cannot interpret. Many-Worlds quantum mechanics can. Many-Worlds quantum mechanics differs from standard quantum mechanics because in Many-Worlds, the wave function is a relative density of universes in the multiverse amplitude rather than a probability amplitude. In Many-Worlds, the Born frequencies are approached rather than given a priori. Thus in Many-Worlds, the rate of approach to the final frequencies can be calculated and compared with observation. This is a new type of reaction rate. I show how to use Many-Worlds to analyze the breakup of
Br2. Such analysis will experimentally test Many-Worlds fermionic and time-dependent quantum mechanics. Conversely, experimental quantum chemistry has become too sophisticated to be analyzed by standard quantum mechanics. Only Many-Worlds can do the job
The "new orthodoxy" of quantum mechanics (QM) based on the decoherence approach requires many-worlds as an essential ingredient for logical consistency, and one may wonder what status to give to all these "other worlds." Here we advocate that it is possible to build a consistent approach to QM where no other worlds are needed, and where the quantum formalism appears as a consequence of requiring the enumerability of physical properties. Such a quantization hypothesis is closely related to indistinguishability, and is deeply inconsistent with classical physics.
Quantum mechanics constituted a great scientific and cultural revolution that profoundly changed our approach to the study of the microscopic and subatomic world. The birth and evolution of the theories of quantum mechanics are revived through the personal and scientific history of the protagonists, their attempts and their working hypotheses, the discoveries, doubts and discussions. The substantially counterintuitive concepts of the new mechanics have redesigned the meaning of our knowledge of the world of atoms; particular attention is then paid to the impact that this new vision of the microscopic world has had on chemistry and our knowledge of the structure and reactivity of atoms and molecules.