منابع مشابه
Fermion Number Fractionization
Solitons emerge as non-perturbative solutions of non-linear wave equations in classical and quantun theories. These are non-dispersive and localised packets of energy-remarkable properties for solutions of non-linear differential equations. In presence of such objects, the solutions of Dirac equation lead to the curious phenomenon of ‘fractional fermion number’, a number which under normal cond...
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Necessary and sufficient conditions are found for any object in 3+1 dimensions to have integer rather than fractional fermion number. Nontrivial examples include the JackiwRebbi monopole and the already well studied Su-Schrieffer-Heeger soliton, both displaying integer multiples of elementary charges in combinations that normally are forbidden.
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متن کاملVacuum charge fractionization re-examined
We consider a model of a quantized fermion field that is based on the Dirac equation in one dimensional space and re-examine how the fermion number of the vacuum, or the vacuum charge, varies when an external potential is switched on. With this model, fractionization of the vacuum charge has been illustrated in the literature by showing that the external potential can change the vacuum charge f...
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ژورنال
عنوان ژورنال: Resonance
سال: 2008
ISSN: 0971-8044,0973-712X
DOI: 10.1007/s12045-008-0081-2