On the calculation rule of probability of relativistic free particle in quantum mechanics

Details On the calculation rule of probability of relativistic free particle in quantum mechanics On the calculation rule of probability of relativistic free particle in quantum mechanics

2008-08-05

arxiv.org/abs/0808.0532v1

Physics

General Physics

18 pages, no figures

Scientific paper

As is well known, in quantum mechanics, the calculation rule of the probability that an eigen-value a_n is observed when the physical quantity A is measured for a state described by the state vector |> is P(a_n)=<|A_n> . However, in Ref.[1], based on strict logical reasoning and mathematical calculation, it has been pointed out, replacing <|A_n>, one should use a new rule to calculate P(a_n) for particle satisfying the Dirac equation. In this paper, we first state some results given by Ref.[1]. And then, we present a proof for the new calculation rule of probability according to Dirac sea of negative energy particles, hole theory and the principle "the vacuum is not observable". Finally, we discuss simply the case of particle satisfying the Klein-Gordon equation.

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