The relativistic operator of interaction of two quasimolecular electrons as a third-order effect of quantum electrodynamics

2010 ◽  
Vol 165 (1) ◽  
pp. 1293-1314
Author(s):  
V. Yu. Lazur ◽  
O. F. Pavlyk ◽  
A. K. Reity
2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
W. Zha ◽  
Z. Tang

Abstract The higher-order quantum electrodynamics (QED) effect for vacuum pair production has been searched without success since 1954. In this paper, we show that the combined world-wide data of lepton pair vacuum production is about 20% smaller than the latest lowest order QED calculation with a 5.2 sigma-level of significance and is consistent with the corresponding higher-order QED result. We claim the discovery of higher-order effect for the QED pair production, which settles the dust of previous debates for several decades. The verification of higher-order QED effect is a fundamental scientific problem, which is an important milestone towards the nonperturbative and nonlinear regime of QED vacuum.


2010 ◽  
Vol 14 (3) ◽  
Author(s):  
V. Yu. Lazur ◽  
O. F. Pavlyk ◽  
O. K. Reity

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Xiangxu Mu ◽  
Ming Zhang ◽  
Hanwei Yang ◽  
Min Li ◽  
Keyu Guo ◽  
...  

1969 ◽  
Vol 47 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Christopher K. Eoll

A recent finite formulation of field theory is applied to quantum electrodynamics. The basic assumptions of the formulation are Bogoliubov causality and TCP invariance of the S-operator; interpolating fields are never used.Ultraviolet divergences never appear in the calculations, and there is manifest Lorentz covariance at every stage.In particular, the calculation of the proper third-order vertex is carried through.


2010 ◽  
Vol 25 (25) ◽  
pp. 4775-4800
Author(s):  
V. YU. LAZUR ◽  
S. I. MYHALYNA ◽  
O. K. REITY

The problem of interaction of two quasimolecular electrons located at an arbitrary distance from each other and near different atoms (nuclei) is solved. The interaction is considered as a second-order effect of quantum electrodynamics in the coordinate representation. It is shown that a consistent account for the natural condition of the interaction symmetry with respect to both electrons leads to an additional contribution to the relativistic interaction of the two quasimolecular electrons compared with both the standard Breit operator and the generalized Breit operator known previously. The generalized Breit–Pauli operator and the operator of electric dipole–dipole interaction of two quasimolecular electrons located at an arbitrary distance from each other are obtained. Modern methods of accounting for the relativistic and correlative effects in the problem of ion–atom interactions are discussed.


2015 ◽  
Vol 3 (2) ◽  
pp. 71-81
Author(s):  
Kenneth McDonald ◽  
Derek Sanchez ◽  
Kenneth Voet ◽  
Ryan Powis ◽  
Joshua Norris ◽  
...  

The Defense Threat Reduction Agency (DTRA) is the Department of Defense’s (DOD) official Combat Support Agency for countering weapons of mass destruction (WMD). DTRA focuses on WMD and mitigating the consequences of a chemical, biological, radiological, nuclear and high yield explosive threat (CBRNE). The initial direct effects of a CBRNE incident are well defined and documented; however, the second and third order effect’s are complex and not thoroughly understood or documented.  Consequence analysis is the practice of analyzing the effects of major events such as a CBRNE event and can assist in predicting the second and third order effects.  Currently there is no method to predict or analyze the second and third order effects of CBRNE events. This research focused on identifying the entities associated with a CBRNE event initially.  The use of experts and surveys developed an exhaustive list of entities and associated realtionships.  The follow-on research focused on the type and strength of the entity relationships.  Next, Fuzzy Cognitive Mapping (FCM) techniques identify and evaluate the complex relationships of the second and third order effects.   Using a mind mapping computer program, FCM techniques produced second and third order effect relationships.  The final product provided a solid first attempt at analyzing a CBRNE event and the associated second and third order effects.  Subsequent research will require greater effort to employ system dynamics techniques to enhance the product and develop a more thorough model.


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