English

Applications of a Simple Formula

Quantum Physics 2007-05-23 v1

Abstract

New applications of the formula Aψ=Aψ+ΔAψA |\psi\rangle = \langle A \rangle |\psi\rangle + \Delta A |\psi_{\perp} \rangle are discussed. Simple derivations of the Heisenberg uncertainty principle and of related inequalities are presented. In addition, the formula is used in an instructive paradox which clarifies a fundamental notion in quantum mechanics.

Cite

@article{arxiv.quant-ph/9506030,
  title  = {Applications of a Simple Formula},
  author = {Lior Goldenberg and Lev Vaidman},
  journal= {arXiv preprint arXiv:quant-ph/9506030},
  year   = {2007}
}

Comments

Latex, 7 pages