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Journal of Experimental and Theoretical Physics

The Scattering Matrix for Finite Time Intervals in the Wave Function Space of Interacting Particles

V. V. Alekseev

Published May 1, 1966• 0 citations
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We develop a formalism for the scattering of a particle on the $q$-deformed Euclidean space. We write down $q$-versions of the Lippmann-Schwinger equation. Their iterative solutions for a weak scattering potential lead us to $q$-versions of the Born series. With the expressions for the wave functions of the scattered particle, we can write down S-matrix elements. We show that these S-matrix elements satisfy unitarity conditions. Considerations about the interaction picture for a quantum system in the $q$-deformed Euclidean space and a discussion of a $q$-version of time-dependent perturbation theory conclude our studies.

arXiv:2208.05723•Aug 11, 2022•0 citations
The scattering of a particle wave packet by a static potential of finite range is considered. In such an interaction, the incident packet enters the potential region, is scattered, and departs, changed in a way which depends on the nature and strength of the interaction. Intuitively there is a region of space and an interval of time in which the interaction occurs. With the aid of the Schr\"odinger equation, this situation is discussed, and a function is derived which can be interpreted as describing the distribution of the interaction in space and time. The properties of the function are investigated, and arguments are given which support this interpretation. With the distribution, the space-time properties of the interaction are explored. Finally, it it is suggested that the distribution function, appropriately extended, may be a useful tool in studying other aspects of particle interactions.
In this paper, a quantum particle is described by a time-space distribution of matter according to the general theory of relativity, which is essentially based on the invariance of the time-space interval. If we consider a time-space interval for two successive points of the trajectory of a punctual quantum particle, as such a particle is conceived in the conventional quantum mechanics, any interaction with a field is described by a variation of this interval. It is remarkable that the velocity induced by such an interaction, for a rest particle is equal to the light velocity, which means that the mass of any punctual particle is null. This is perfectly understandable from the physical point of view, since a particle described only by position coordinates is a punctual one, i.e. with a null volume, and, consequently, a null mass. Unlike the present understanding of a quantum particle, as a punctual entity randomly occupying different positions given by its wave function, and with a mass given by coupling with a Higgs boson, we conceive a quantum particle as a distribution of matter, quantized by the equality of the mass given by the space integral of the wave function, with the mass given by the matter dynamics according to the general theory of relativity. In this framework, we previously described the spinor propagation under the interaction with an electromagnetic field, the particle spin, the graviton spin, the black hole dynamics, the matter dynamics of our universe, as a hypersurface defined by the time-space parameters in the total universe, with the Big Bang, inflation, redshift, and the crushing up of the quantum particles at the Big Bang and at the Schwarzschild boundary. Here, we describe essential quantum phenomenon of the particle scattering.
Scattering of a particle on the qqq-deformed Euclidean space
We develop a formalism for the scattering of a particle on the qqq-deformed Euclidean space. We write down qqq-versions of the Lippmann-Schwinger equation. Their iterative solutions for a weak scattering potential lead us to qqq-versions of the Born series. With the expressions for the wave functions of the scattered particle, we can write down S-matrix elements. We show that these S-matrix elements satisfy unitarity conditions. Considerations about the interaction picture for a quantum system in the qqq-deformed Euclidean space and a discussion of a qqq-version of time-dependent perturbation theory conclude our studies.