"Stochastic Processes in Quantum Physics" addresses the question 'What
is the mathematics needed for describing the movement of quantum
particles', and shows that it is the theory of stochastic (in particular
Markov) processes and that a relativistic quantum particle has pure-jump
sample paths while sample paths of a non-relativistic quantum particle
are continuous. Together with known techniques, some new stochastic
methods are applied in solving the equation of motion and the equation
of dynamics of relativistic quantum particles. The problem of the origin
of universes is discussed as an application of the theory. The text is
almost self-contained and requires only an elementary knowledge of
probability theory at the graduate level, and some selected chapters can
be used as (sub-)textbooks for advanced courses on stochastic processes,
quantum theory and theoretical chemistry.