Quantum electrodynamics based on self-energy, without second quantization: The Lamb shift and long-range Casimir-Polder van der Waals forces near boundaries

1987 ◽  
Vol 36 (6) ◽  
pp. 2550-2556 ◽  
Author(s):  
A. O. Barut ◽  
J. P. Dowling
Keyword(s):  
Long Range ◽  
Quantum Electrodynamics ◽  
Lamb Shift ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Second Quantization ◽  
Self Energy

scholarly journals Tuning adlayer-substrate interactions of graphene/h-BN heterostructures on Cu(111)–Ni and Ni(111)–Cu surface alloys

RSC Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1916-1927
Author(s):  
Jianmei Huang ◽  
Qiang Wang ◽  
Pengfei Liu ◽  
Guang-hui Chen ◽  
Yanhui Yang
Keyword(s):  
Long Range ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Alloy Surface ◽  
Surface Alloys ◽  
Substrate Interactions

The evolution of the interface and interaction of h-BN and graphene/h-BN (Gr/h-BN) on Cu(111)–Ni and Ni(111)–Cu surface alloys versus the Ni/Cu atomic percentage on the alloy surface were comparatively studied by DFT-D2, including critical long-range van der Waals forces.

scholarly journals Quantum electrodynamics with self-conjugated equations with spinor wave functions for fermion fields

2021 ◽  
pp. 2150086
Author(s):  
V. P. Neznamov ◽  
V. E. Shemarulin
Keyword(s):  
Cross Sections ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Quantum Electrodynamics ◽  
Lamb Shift ◽  
Wave Functions ◽  
Self Energy ◽  
Fermion Fields ◽  
Spinor Wave

Quantum electrodynamics (QED) with self-conjugated equations with spinor wave functions for fermion fields is considered. In the low order of the perturbation theory, matrix elements of some of QED physical processes are calculated. The final results coincide with cross-sections calculated in the standard QED. The self-energy of an electron and amplitudes of processes associated with determination of the anomalous magnetic moment of an electron and Lamb shift are calculated. These results agree with the results in the standard QED. Distinctive feature of the developed theory is the fact that only states with positive energies are present in the intermediate virtual states in the calculations of the electron self-energy, anomalous magnetic moment of an electron and Lamb shift. Besides, in equations, masses of particles and antiparticles have the opposite signs.

Computer Simulation of Colloidal Aggregation Induced by Directionalism of Long Range van der Waals Forces

2007 ◽  
Vol 23 (08) ◽  
pp. 1241-1246 ◽  
Author(s):  
XIONG Hai-Ling ◽  
◽  
◽  
YUAN Yong-Zhi ◽  
LI Hang ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Long Range ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Colloidal Aggregation

scholarly journals Some recent advances in bound-state quantum electrodynamics

2005 ◽  
Vol 83 (4) ◽  
pp. 375-386 ◽  
Author(s):  
U D Jentschura ◽  
J Evers
Keyword(s):  
Effective Field Theories ◽  
Quantum Electrodynamics ◽  
Lamb Shift ◽  
Recent Progress ◽  
Bound State ◽  
Effective Field ◽  
Field Theories ◽  
Nonrelativistic Quantum ◽  
Self Energy ◽  
Bound Electron

We discuss recent progress in various problems related to bound-state quantum electrodynamics: the bound-electron g factor, two-loop self-energy corrections, and the laser-dressed Lamb shift. The progress relies on various advances in the bound-state formalism, including ideas inspired by effective field theories such as nonrelativistic quantum electrodynamics. Radiative corrections in dynamical processes represent a promising field for further investigations. PACS Nos.: 31.15.–p, 12.20.Ds

DERIVATION OF THE LAMB SHIFT FORMULA FOR NON-S-STATES WITHOUT APPLYING THE CONCEPT OF RELATIVISTIC QUANTUM ELECTRODYNAMICS

1995 ◽  
Vol 09 (09) ◽  
pp. 537-542 ◽  
Author(s):  
J. SEKE
Keyword(s):  
Dirac Equation ◽  
Quantum Electrodynamics ◽  
Lamb Shift ◽  
Relativistic Quantum ◽  
Nonrelativistic Quantum ◽  
Second Quantization ◽  
First Time ◽  
S States

It is shown, for the first time to our knowledge, that the standard Lamb shift formula for non-S-states of hydrogenic atoms can be derived by applying the methods of nonrelativistic quantum electrodynamics and without using the Dirac equation and the second quantization for the electron.

ON THE STRONG VAN DER WAALS FORCES BETWEEN HADRONS DUE TO CONFINING POTENTIALS

1987 ◽  
Vol 02 (01) ◽  
pp. 265-272 ◽  
Author(s):  
A. O. BARUT ◽  
R. RACZKA
Keyword(s):  
Long Range ◽  
Bound States ◽  
Degrees Of Freedom ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Color Singlet ◽  
Singlet States ◽  
Color Scheme

The problem of long range forces between hadrons is re-examined. Without color degrees of freedom the confining potentials lead to unacceptably large van der Waals forces. The color degrees of freedom are investigated in the case of mesons taking into account both of the color singlet states of four constituents. The consistency of the color scheme requires the existence of four-quark bound states as well as two separate mesons and puts still restrictions on the confining potentials.

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