We argue that the Generalized Uncertainty Ptinciple (GUP) and the compact Extra dimensions will lead the hydrogen atom has the non bounded state spectra which equal the free particle in extra dimensions. We use Generalized Uncertainty Principle (GUP) to calculate the new energy spectra of hydrogen atom, and which lives in three dimensional Euclidean spaces with one extra dimension. The result is not familiar with our known before that E n =0 when n is large enough. In our modified new spectra, we obtain that E n, ι ,0 = (1+2 β ι 2 ／ ρ 2 ) ι 2 ／ 2 mρ 2 , which is lager than zero. These new spectra give us new method to obtain the existence of extra dimensions. Finally, we find that the spectra are same as part of extra dimensions in planck scale.
KeywordsHydrogen AtomGUPExtra Dimensions
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