The problem of quantum interference phenomena is analyzed on the Mach-Zehnder Interferometer - an experimental setup similar to double slits device, but much simpler - under the light of the main schools of interpretations of Quantum Mechanics. Although this is a work very based on Pessoa Jr [1]-[3], special emphasis is given to Many Worlds Interpretation due to its recent growing of interests within scientific community as much as within general public. The Many-Worlds Interpretation is an approach to Quantum Mechanics according to which, in addition to the world we are aware of directly, there are many other similar worlds that exist in parallel at the same space and time. The existence of the other worlds makes it possible to remove randomness and action at a distance from quantum theory. A basic introduction of an interpretation like Many Worlds that have been extensively present in the media is an important contribution to the initial and continued education for Physics Teachers, mainly when a more conceptual approach to the subject is aimed.
interpretations of quantum mechanics; epistemology; Mach-Zehnder interferometer
