TY  - JOUR
AU  - Kraiselburd, L.
AU  - Castillo, F. L.
AU  - Mosquera, M. E.
AU  - Vucetich, H.
PY  - 2018
DA  - 2018//
TI  - Magnetic contributions in Bekenstein type models
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 043526
EP  - 14pp
VL  - 97
IS  - 4
PB  - Amer Physical Soc
AB  - In this work, we analyze the spatial and time variation of the fine structure constant (alpha) upon the theoretical framework developed by Bekenstein (Phys. Rev. D 66, 123514 (2002)). We have computed the field psi related to alpha at first order of the weak-field approximation and have also improved the estimation of the nuclear magnetic energy and, therefore, their contributions to the source term in the equation of motion of psi. We obtained that the results are similar to the ones published in L. Kraiselburd and H. Vucetich, Int. J. Mod. Phys. E 20, 101 (2011) which were computed using the zero order of the approximation, showing that one can neglect the first order contribution to the variation of the fine structure constant. Through the comparison between our theoretical results and the observational data of the Eotvos-type experiments or the time variation of alpha over the cosmological time scale, we set constraints on the free parameter of the Bekenstein model, namely the Bekenstein length.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1801.08594
UR  - https://doi.org/10.1103/PhysRevD.97.043526
DO  - 10.1103/PhysRevD.97.043526
LA  - English
N1  - WOS:000425744000001
ID  - Kraiselburd_etal2018
ER  -