In this paper, we calculate Hydrogen hyperfine splitting (HFS) at the order a4 by using NRQED as an effective field theory. We also show the leading-order contribution of nuclear size to the energy correction of Hydrogen atom .
S. M. Zebarjad, & M. Bigdeli, . (2020). Excited states energy corrections of hydrogen atom at the order of & alpha4 using NRQED as an effective field theory. Iranian Journal of Physics Research, 4(1), 33–40.
MLA
S. M. Zebarjad, & M. Bigdeli, . "Excited states energy corrections of hydrogen atom at the order of & alpha4 using NRQED as an effective field theory", Iranian Journal of Physics Research, 4, 1, 2020, 33–40.
HARVARD
S. M. Zebarjad, & M. Bigdeli, . (2020). 'Excited states energy corrections of hydrogen atom at the order of & alpha4 using NRQED as an effective field theory', Iranian Journal of Physics Research, 4(1), pp. 33–40.
CHICAGO
S. M. Zebarjad, & M. Bigdeli, , "Excited states energy corrections of hydrogen atom at the order of & alpha4 using NRQED as an effective field theory." Iranian Journal of Physics Research, 4 1 (2020): 33–40,
VANCOUVER
S. M. Zebarjad , M. Bigdeli . Excited states energy corrections of hydrogen atom at the order of & alpha4 using NRQED as an effective field theory. Iranian Journal of Physics Research. 2020;4(1):33–40 (In Persian).