Caleulation of nonrelativistic scattering of charged scalar particles from a classical Aharonov-Bohm solenoid without an explicit gauge choice: Working within gauge theories without the explicit use of a gauge

1986 ◽  
Vol 166 (2) ◽  
pp. 299-321 ◽  
Author(s):  
A.Y Shiekh
2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Abdelmalek Boumali ◽  
Houcine Aounallah

We analyze the relativistic quantum motion of a charged scalar particles in the presence of an Aharonov-Bohm and Coulomb potentials in the space-times produced by an idealized cosmic string and global monopole. We have calculated and discussed the eigensolutions of DKP equation and their dependence on both the geometry of the space-times and coupling constants parameters.


1993 ◽  
Vol 48 (7) ◽  
pp. 3221-3224 ◽  
Author(s):  
Zhijian Tao

1998 ◽  
Vol 13 (16) ◽  
pp. 2791-2831 ◽  
Author(s):  
DAVID ALBA ◽  
LUCA LUSANNA

After a summary of a recently proposed new type of instant form of dynamics (the Wigner-covariant rest-frame instant form), the reduced Hamilton equations in the covariant rest-frame Coulomb gauge for the isolated system of N scalar particles with pseudoclassical Grassmann-valued electric charges plus the electromagnetic field are studied. The Lienard–Wiechert potentials of the particles are evaluated and it is shown how the causality problems of the Abraham–Lorentz–Dirac equation are solved at the pseudoclassical level. Then, the covariant rest-frame description of scalar electrodynamics is given. Applying to it the Feshbach–Villars formalism, the connection with the particle plus electromagnetic field system is found.


Author(s):  
A. A. Saharian ◽  
H. G. Sargsyan

We investigate the cosmological constant induced by quantum fluctuations of a bulk charged scalar field on a brane in background of locally anti-de Sitter spacetime with toroidally compact spatial dimensions. Along compact dimension quasiperiodicity conditions are imposed with general phases and, in addition, the presence of a constant gauge field is assumed. The latter gives rise to Aharonov-Bohm type effect on the characteristics of the scalar vacuum. The renormalization of the vacuum energy density on the brane is done by making use of the generalized zeta function technique. The behavior of the cosmological constant is studied as a function of the location of the brane, of the length of the compact dimensions and of the magnetic flux enclosed by the compact dimension. In particular, it is shown that the cosmological constant is a periodic function of the magnetic flux with the period equal to the flux quantum.


2021 ◽  
Vol 32 ◽  
Author(s):  
Khiem Hong Phan ◽  
Dzung Tri Tran

In this paper, we present general one-loop form factors for \(H\rightarrow \gamma^* \gamma^*\) in \(R_{\xi}\) gauge, considering all cases of two on-shell, one on-shell and two off-shell for final photons. The calculations are performed in standard model and in arbitrary beyond the standard models which charged scalar particles may be exchanged in one-loop diagrams. Analytic results for the form factors are shown in general forms which are expressed in terms of the Passarino-Veltman functions. We also confirm the results in previous computations which are available for the case of two on-shell photons. The \(\xi\)-independent of the result is also discussed. We find that numerical results are good stability with varying \(\xi=0,1\) and $\xi\rightarrow \infty\).


2004 ◽  
Vol 111 (6) ◽  
pp. 821-840 ◽  
Author(s):  
W. Hikida ◽  
S. Jhingan ◽  
H. Nakano ◽  
N. Sago ◽  
M. Sasaki ◽  
...  

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