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Timeline for Standard Model Particle Properties

Current License: CC BY-SA 4.0

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Dec 6, 2021 at 16:01 vote accept davypough
Dec 4, 2021 at 21:31 comment added AccidentalTaylorExpansion @ACuriousMind Well quantum mechanics isn't only about discreteness but it is one of its distinguishing features. A classical harmonic oscillator can change its energy by any amount you want. A quantum HO can only change energy in discrete packets. A field theory can have arbitrary excitations while QFT has particles as smallest possible excitations.
Dec 4, 2021 at 20:38 answer added anna v timeline score: 3
Dec 4, 2021 at 20:02 comment added ACuriousMind I don't think this is a well-defined question. Given a finite set of particles, we can just invent an operator that assigns 1 to the first particle, 2 to the second, etc. Then all these particle are "distinguished by a discrete property" (the number assigned to them), but that doesn't really tell us anything. Also, quantum mechanics is not about discreteness (see: position and momentum operators in QM).
S Dec 4, 2021 at 19:51 review First questions
Dec 4, 2021 at 20:13
S Dec 4, 2021 at 19:51 history asked davypough CC BY-SA 4.0