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Some Innovations in Expantion of Causal Quantum Mechanics to Quantum Field Theory

Hassanpour, Nima | 2012

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43923 (04)
  4. University: Sharif University of Technology
  5. Department: Physics
  6. Advisor(s): Golshani, Mehdi
  7. Abstract:
  8. The advent of Quantum Mechanics in the beginning of twentieth century created a fundamental evolution on physics. The ability and performance of Quantum Mechanics in perception of natural phenomena have spread its penetration farther than physics and affected different realms of science, and especially Philosophy. As a result, several philosophic and logical principles defined according to the Quantum Mechanics, and also several of them were rejected because of their inconsistency with Quantum Mechanics. Since Quantum Mechanics was not flawless theory, some of these evolutions have created profound deviations in interpretation and perception of nature. One of these changes was denial of causality. But this procedure created inconsistency in the theory.
    In 1952, according to the formalism of Quantum Mechanics, David Bohm presented a new causal interpretation from Quantum Mechanics, so that all predictions of Quantum Mechanics were obtained from that theory and also principle of causality was inseparable part of natural phenomena. Existence of Quantum Potential in this theory is one of its Strength point. The Quantum Potential gives the ability of interpretation of some observations that standard Quantum Mechanics was unable to solve them.
    At the beginning of its advent, Bohmian Quantum Mechanics was not attended justly. But its elegance features and attempts of John Bell in decade of 80, made this theory more widespread. Nowadays some attempts are done to make causal Quantum Mechanics more profound. Expansion of causal Quantum Theory to Quantum Field Theory is one of the significant issues that relates to this realm of physics. It seems the features that causal theory attributes to wave and particle; like motion of particle in path, determination of velocity and position of particle in each moment, make this expansion more effective. Bohm himself make some efforts to achieve this goal, but existing of some problems stopped his attempt. But in recent years interpretation and solution are made to obviate these problems. In this Thesis, is tried to investigate the new procedures for expanding of Causal Quantum Mechanics to Quantum Field Theory
  9. Keywords:
  10. Bohmian Quantum Mechanics ; Quantum Potential ; Quantum Field Theory ; Cousal Quantum Mechanics ; Wave and Particle

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