Wednesday, May 27, 2020

ADVANCED QUANTUM MECHANICS Book download Free PDF






You have had a complete course in non-relativistic quantum theory. I assume this known. All the general principles of the NR theory are valid and true under all circumstances, in particular also when the system happens to be relativistic. What you have learned is therefore still good. You have had a course in classical mechanics and electrodynamics including special relativity. You know what is meant by a system being relativistic; the equations of motion are formally invariant under Lorentz transformations. General relativity we shall not touch. This course will be concerned with the development of a Lorentz–invariant Quantum theory. That is not a general dynamical method like the NR quantum theory, applicable to all systems. We cannot yet devise a general method of that kind, and it is probably impossible. Instead we have to find out what are the possible systems, the particular equations of motion, which can be handled by the NR quantum dynamics and which are at the same time Lorentz–invariant.


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