THE QUANTUM MECHANICS TOOLKIT: Commutators, Simultaneous states, Dispersion, and Moments

Опубликовано: 04 Октябрь 2026
на канале: YouSciences by GIUX
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When it comes to quantum mechanics, one cannot help but be captivated by the mystery! A mystery hidden in the infinitely small, where the eye cannot see. The compass stops working and one becomes lost. This is where the arsenal of quantum mechanics comes into play: a set of modern and sophisticated mathematical rules that border on fantasy and imagination. We will begin by discussing probability in quantum physics, we will discuss expected (average) value or expectation, variance, simultaneous measurements and dual states. We will see how the commutator guarantees the compatibility of multiple observables and finally we will touch on dispersion in quantum measurements. #paraphernalia #switch #observables #dispersion #variance #expectedvalue #measurement #physics #mathematics #geometry #physics #maths #quantum #quantummechanics #doctorgiux #giux #yousciences

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Further reading:
https://it.wikipedia.org/wiki/Commuta...)
https://it.wikipedia.org/wiki/Osserva...
https://it.wikipedia.org/wiki/Problem...
https://it.wikipedia.org/wiki/Interpr...

Quantum Mechanics Books:
➤John S. Townsend, A Modern Approach to Quantum Mechanics, Univ Science Books (2012)
➤Dirac, Paul A. M. The Principles of Quantum Mechanics. Paolo Boringhieri, Turin 1959 (1958).
➤J.J. Sakurai, Jim Napolitano, Modern Quantum Mechanics,
second edition, Zanichelli.
➤R.P. Feynman et al., Feynman's Physics, Volume III, Masson
➤L. Landau and E. Lifschitz, Quantum Mechanics, Editori Riuniti.
➤S. Gasiorowicz, Quantum Physics, J. Wiley & Sons.
➤Born, Max., Atomic Physics, Boringhieri 1968 BU Manual
➤Feynman, The Physics of, vol. 3, Quantum Mechanics, Zanichelli, Bologna 2001 - BU

Other materials:
➤https://dalfovo.science.unitn.it/lezi...
➤http://www.cs.infn.it/appunti/appunti...
➤https://www.eoinfnpr.it/Appunti_2015.pdf
➤Book collection: https://www.lfns.it/STORIA/Download/P...

Chapter summary
00:00 Expected Value
05:55 Compatible Observables
14:55 Simultaneous Eigenket Basis
17:37 Degenerate States
23:20 Measurement
28:48 Dispersion

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