On the Gauge Invariance of the Transition Probability of a Charged Particle in Electromagnetic Field |
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| Authors: | QIAN Shang-Wu GU Zhi-Yu |
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| Affiliation: | Physics Department, Peking University, Beijing 100871, China physics Department, Capital Normal University, Beijing 100037, China |
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| Abstract: | This paper suggests a principle to find a unitary operator U which transforms non-physical quantity,zero-potential Hamiltonian Ho, into true physical quantity UHoU for a charged particle in classical electromagneticfield, and puts forward a unified form of constructing gauge-independent transition probabilities in this case. Differentmethods correspond to different unitary operators which satisfy the above-mentioned principle. |
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| Keywords: | gauge invariance true physical quantity and nonphysical quantity gauge independent transition probability |
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