Short range interactions in the hydrogen atom Andrés Darío Bermúdez Manjarres, Diego Bedoya Fierro, Neelima Govind Kelkar and Marek Nowakowski Eur. Phys. J. D, 72 9 (2018) 161 Published online: 25 September 2018 DOI: 10.1140/epjd/e2018-90075-1