Applications of a simple quantum mechanical formula

Lior Goldenberg, Lev Vaidman

Research output: Contribution to journalArticlepeer-review


New applications of the formula A|ψ〉 = 〈A〉|ψ〉 + ΔA|ψ〉 are discussed. Simple derivations of the Heisenberg uncertainty principle and of related inequalities are presented. It is also shown that a state corresponding to a maximal uncertainty of any given observable cannot be unique.

Original languageEnglish
Pages (from-to)1059-1060
Number of pages2
JournalAmerican Journal of Physics
Issue number8
StatePublished - Aug 1996


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