Probability Bracket Notation and Probability Modeling

Details Probability Bracket Notation and Probability Modeling Probability Bracket Notation and Probability Modeling

2009-09-07

arxiv.org/abs/0909.1295v1

Mathematics

Probability

8 pages

Scientific paper

Inspired by the Dirac notation, a new set of symbols, the Probability Bracket Notation (PBN) is proposed for probability modeling. By applying PBN to discrete and continuous random variables, we show that PBN could play a similar role in probability spaces as the Dirac notation in Hilbert vector spaces. The time evolution of homogeneous Markov chains with discrete-time and continuous-time are discussed in PBN. Our system state p-kets are identified with the probability vectors, while our system state p-bra can be identified with the Doi state function or the Peliti standard bra. We also suggest that, by transforming from the Schrodinger picture to the Heisenberg picture, the time-dependence of a system p-ket of a homogeneous MC can be shifted to the observable as a stochastic process.

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