Lorentz symmetry is one of the cornerstone of both general relativity and the standard model of particle physics . We study the violation of Lorentz symmetry in some basic phenomena in quantum physics. Using the Green’s function, and the source 4-current, the differential equation of 4-vector of electromagnetic potential is solved and the modified coulomb potential is obtained by some researchers. Using modified Coulomb potential, we find the corrections due to LIV on the spectrum of Hydrogen and Helium atoms. We also investigate the consequence of LIV on Stark, Zeeman and Spin orbit effects and obtain upper bounds for the LIV coefficients.
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