History and Some Aspects of the Lamb Shift

  title={History and Some Aspects of the Lamb Shift},
  author={G. Jordan Maclay},
Radiation is a process common to classical and quantum systems with very different effects in each regime. In a quantum system, the interaction of a bound electron with its own radiation field leads to complex shifts in the energy levels of the electron, with the real part of the shift corresponding to a shift in the energy level and the imaginary part to the width of the energy level. The most celebrated radiative shift is the Lamb shift between the 2 s 1 / 2 and the 2 p 1 / 2 levels of the… 

New Insights into the Lamb Shift: The Spectral Density of the Shift

In an atom, the interaction of a bound electron with the vacuum fluctuations of the electromagnetic field leads to complex shifts in the energy levels of the electron, with the real part of the shift


A slight anomaly in optical spectra of the hydrogen atom led Willis E. Lamb to the search for the proton size. As a result, he found the shift of the 2S1/2 level, the first experimental demonstration

Effective Hamiltonians in Nonrelativistic Quantum Electrodynamics

This paper considers some second-order effective Hamiltonians describing the interaction of the quantum electromagnetic field with atoms or molecules in the nonrelativistic limit, and indicates that different expressions can be obtained, each of them with a well-defined range of validity and possible applications.

Dynamical Symmetries of the H Atom, One of the Most Important Tools of Modern Physics: SO(4) to SO(4, 2), Background, Theory, and Use in Calculating Radiative Shifts

A clearer, integrated presentation of the symmetries of the Schrodinger hydrogen atom is presented, providing explicit expressions for all of the manifestly Hermitian generators in terms of position and momenta operators in a Cartesian space.

Quantum bath engineering of a high impedance microwave mode through quasiparticle tunneling

In microwave quantum optics, dissipation usually corresponds to quantum jumps, where photons are lost one by one. Here we demonstrate a new approach to dissipation engineering. By coupling a high

The Analytical Modeling of Nuclear Size Effect on Relativistic Electron in Hydrogen Atom

Article history: Received 27April 2020 Revised 19 June 2020 Accepted 22 June 2020 Available online 31August 2020 The effects of relativistic motion, the spin-orbit interaction and Zitterbewegung of



The Electromagnetic shift of energy levels

B very beautiful experiments, Lamb and Retherford1 have shown that the fine structure of the second quantum state of hydrogen does not agree with the prediction of the Dirac theory. The 2s level,

Some Observable Effects of the Quantum-Mechanical Fluctuations of the Electromagnetic Field

An intuitive explanation is given for the electromagnetic shift of energy levels by calculating the mean square amplitude of oscillation of an electron coupled to the zero-point fluctuations of the

Electrodynamic Displacement of Atomic Energy Levels. II. Lamb Shift

The vacuum fluctuations of the photon and pair fields modify the interaction of an electron with an electromagnetic field. The effects on the energy levels are conveniently described in terms of the

Techniques in Analytic Lamb Shift Calculations

Quantum electrodynamics has been the first theory to emerge from the ideas of regularization and renormalization, and the coupling of the fermions to the virtual excitations of the electromagnetic

An Introduction to Quantum Optics and Quantum Fluctuations

This book is an introduction to quantum optics for students who have studied electromagnetism and quantum mechanics at an advanced undergraduate or graduate level. It provides detailed expositions of

QED: The Strange Theory of Light and Matter

Famous the world over for the creative brilliance of his insights into the physical world, Nobel Prize-winning physicist Richard Feynman also possessed an extraordinary talent for explaining

Quantum Electrodynamics. I. A Covariant Formulation

Attempts to avoid the divergence difficulties of quantum electrodynamics by multilation of the theory have been uniformly unsuccessful. The lack of convergence does indicate that a revision of

Investigation of the fine structure of antihydrogen

  • M. B. X. R. C. J. W. A. C. C. L. M. S. R. S. A. N. J. Ahmadi Alves Baker Bertsche Capra Carruth Cesar ChM. Ahmadi J. Wurtele
  • Physics
  • 2020
Measurements of the fine structure in the n = 2 states of antihydrogen, the antimatter counterpart of the hydrogen atom, are reported, finding that the classic Lamb shift in antiHydrogen is consistent with theory at a level of 11 per cent.