2014/08/31 by G. Yu. Kryuchkyan, G Yu Kryuchkyan, O. Kyriienko +3 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Atom (system on chip) #Lamb shift #Photon #Principal quantum number #Quantum #Quantum and electron transport phenomena #RADIUS #Ring (chemistry) #Strong Light-Matter Interactions #Virtual particle #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1088/0953-4075/48/2/025401
published as J. Phys. B: At. Mol. Opt. Phys. 48, 025401 (2015) · 14 pages, 3 figures
openalex publication_date 2014/12/24 · arxiv created 2015/01/06 · arxiv updated 2015/01/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the vacuum radiative corrections to energy levels of a confined electron in quantum rings. The calculations are provided for the Lamb shift of energy levels in low-momentum region of virtual photons and for both one-dimensional and two-dimensional quantum rings. We show that contrary to the well known case of a hydrogen atom the value of the Lamb shift increases with the magnetic momentum quantum number m. We also investigate the dependence of the Lamb shift on magnetic flux piercing the ring and demonstrate a presence of magnetic-flux-dependent oscillations. For one-dimensional ring the value of the shift strongly depends on the radius of the ring. It is extremely small for semiconductor rings but can attain measurable quantities in natural organic ring-shape molecules, such as benzene, cycloalcanes and porphyrins.