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arXiv:physics/0502110

Time reversal noninvariance in quantum mechanics and in nonlinear optics

V. A. Kuz’menko

Published Feb 21, 2005• 0 citations
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Abstract

The experimental proofs of strong time invariance violation in optics are discussed. Time noninvariance is the only real physical base for explanation the origin of the most phenomena in nonlinear optics. The experimental study of forward and reversed transitions in oriented in uniform electric field molecules is proposed. PACS number: 33.80.Rv, 42.50.Hz

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arXiv:physics/0403102•Mar 22, 2004•0 citations
The experimental proofs of strong time invariance violation in optics are discussed. Time noninvariance is the only real physical base for explanation the origin of the most phenomena in nonlinear optics. The experimental study of forward and reversed transitions in oriented in uniform electric field molecules is proposed. PACS number: 33.80.Rv, 42.50.Hz
Electromagnetic Radiation 20time reversal, for the motion equations of quantum mechanics and the Hamiltonian of electromagnetic interaction are unchanged under time reversal.However, most processes related to laser and nonlinear optics are actually high nonequilibrium ones.As we known that time reversal symmetry will generally be violated in non-equilibrium processes.It is proved in this paper that after the retarded effect of radiation fields is taken into account, the time reversal symmetry will be violated in light's high order stimulated radiation and absorption processes with ml lm BB , although the Hamiltonian of electromagnetic interaction is still unchanged under time reversal.The transition probability of third order process is calculated and the revised formula of nonlinear optics polarizability is deduced in this paper.Many phenomena of time reversal symmetry violation in non-linear optics just as sum frequency, double frequency, different frequencies, double stable states, self-focusing and self-defocusing, echo phenomena, as well as optical self-transparence and self absorptions and so on are analyzed.The reason to cause symmetry violation is that some filial or partial transition processes of bounding state atoms are forbidden or can't be achieved due to the law of energy conservation.These restrictions can cause the symmetry violation of time reversal of other partial transition processes which can be actualized really.These realizable filial or partial processes which violate time reversal symmetry generally are just the practically observed physical processes.The symmetry violation is also relative to the initial state's asymmetries of bounding atoms before and after time reversal.For the electromagnetic interaction between non-bounding atoms and radiation fields, there is no this kind of symmetry violation of time reversal.For example, in the experiments of particle physics in accelerators, we can not observe the symmetry violation of time reversal.At last, the influences of symmetry violation of time reversal on the foundation theory of laser and non-equilibrium statistical physics are discussed.The phenomena of producing laser without the reversion of particle population and transition without radiation can be well explained.The result indicates that the irreversibility of evolution processes of macrosystems originates from the irreversibility of micro-processes.The irreversibility paradox can be eliminated thoroughly.By introducing retarded electromagnetic interaction, the forces between classical changed particles are not conservative ones.Based on them, we can establish the revised Liouville equation which is irreversible under time reversal.In this way, we can lay a really rational dynamic foundation for classical non-equilibrium statistical mechanics. The transition probability of the first order processFor simplification, we consider an atom with an electron in its external layer.Electron's mass is  , charge is q .When there is no external interaction, the Hamiltonian and the wave function of electron are individually  2 2 0 ˆ2 HU r m     1 0 n Et n en      (1) www.intechopen.comRetarded Electromagnetic Interaction and Symmetry Violation of Time Reversal in High Order Stimulated Radiation and Absorption Processes of Lights as Well as Nonlinear Optics ... 21 After external electromagnetic field is introduced, the interaction Hamiltonian is 2 2 2 ˆˆ ˆ2 qq HA pA q c c How to reference In order to correctly reference this scholarly work, feel free to copy and paste the following: Mei Xiaochun (2012).Retarded Electromagnetic Interaction and Symmetry Violation of Time Reversal in High Order Stimulated Radiation and Absorption Processes of Lights as well as Nonlinear Optics -Influence on Fundamental Theory of Laser and Non-Equilibrium Statistical Physi, Electromagnetic Radiation, Prof. S. O.