Bent E. Sørensen
Interpretation of quantum mechanics as a theory of extended particles
C. K. Raju
A self-consistent approach to quantum field theory for extended particles
Eduard Prugovečki
Scattering theory for extended elementary particles in nonrelativistic stochastic quantum mechanics
R. Gagnon
Scattering theory for extended elementary particles in stochastic phase space is studied. It is shown that the interacting Hamiltonian is equivalent to an effective potential in configuration representation. Asymptotic completeness can be studied by investigating the behavior of the effective potential. The sharp-point limit of the extension of these particles is studied. It is also shown that scattering theory can also be studied directly in stochastic phase space in the optimal case.
Quantum Theory of the Free Particle
Tao Mei
On the group theoretical approach to the Quantum Theory of an interacting spin-0 particle
Giuseppe Nisticò
We point out a difficulty that arises in extending the group theoretical approach that deductively establish the quantum theory of a free particle to the case of an interacting particle. Then we develop an approach which overcomes this difficulty. The result is a theory of an interacting particle where the standard theory is characterized by specific covariance properties related to the interaction.
Generalized quantum theory
Thomas Filk A, Hartmann Römer