scholarly journals Inflation of universe due to nonlinear electrodynamics

2017 ◽  
Vol 32 (13) ◽  
pp. 1750071 ◽  
Author(s):  
S. I. Kruglov
Keyword(s):  
Minkowski Space ◽  
Electromagnetic Fields ◽  
Spectral Index ◽  
Nonlinear Electrodynamics ◽  
Gravitation Field ◽  
Dimensional Parameter ◽  
Minkowski Space Time ◽  
Wmap Data ◽  
Stochastic Magnetic Fields ◽  
The Universe

A model of nonlinear electrodynamics with a dimensional parameter [Formula: see text] is considered. Electromagnetic fields are the source of the gravitation field and inflation of the universe. We imply that the universe is filled by stochastic magnetic fields. It is demonstrated that after the universe inflation the universe decelerates approaching the Minkowski space–time. We evaluate the spectral index, the tensor-to-scalar ratio, and the running of the spectral index which approximately agree with the Planck and WMAP data.

scholarly journals Nonlinear electromagnetic fields as a source of universe acceleration

2016 ◽  
Vol 31 (11) ◽  
pp. 1650058 ◽  
Author(s):  
S. I. Kruglov
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Fields ◽  
Spectral Index ◽  
Scale Factor ◽  
Gravitation Field ◽  
Dimensional Parameter ◽  
Classical Stability ◽  
Stochastic Magnetic Field ◽  
The Universe

A model of nonlinear electromagnetic fields with a dimensional parameter [Formula: see text] is proposed. From PVLAS experiment the bound on the parameter [Formula: see text] was obtained. Electromagnetic fields are coupled with the gravitation field and we show that the universe accelerates due to nonlinear electromagnetic fields. The magnetic universe is considered and the stochastic magnetic field is a background. After inflation the universe decelerates and approaches to the radiation era. The range of the scale factor, when the causality of the model and a classical stability take place, was obtained. The spectral index, the tensor-to-scalar ratio, and the running of the spectral index were estimated which are in approximate agreement with the Planck, WMAP, and BICEP2 data.

scholarly journals Inflation of Universe by Nonlinear Electrodynamics

2020 ◽  
Author(s):  
Sergey Kruglov
Keyword(s):  
Spectral Index ◽  
Nonlinear Electrodynamics ◽  
Second Stage ◽  
Classical Stability ◽  
Dimensional Parameters ◽  
Wmap Data ◽  
Coulomb Law ◽  
Stochastic Magnetic Fields ◽  
The Universe ◽  
Universe Evolution

Nonlinear electrodynamics with two dimensional parameters is studied. The range of electromagnetic fields when principles of causality, unitarity and the classical stability hold are obtained. A singularity of the electric field at the center of charges is absent within our model and there are corrections to the Coulomb law as $r\rightarrow\infty$. The universe inflation takes place in the background of stochastic magnetic fields. The second stage of the universe evolution is the radiation era so that the graceful exit exists. We estimated the spectral index, the tensor-to-scalar ratio, and the running of the spectral index that are in an approximate agreement with the PLANK and WMAP data.

scholarly journals Inflation of universe by nonlinear electrodynamics

2020 ◽  
Vol 29 (15) ◽  
pp. 2050102
Author(s):  
S. I. Kruglov
Keyword(s):  
Spectral Index ◽  
Nonlinear Electrodynamics ◽  
Second Stage ◽  
Classical Stability ◽  
Dimensional Parameters ◽  
Wmap Data ◽  
Coulomb Law ◽  
Stochastic Magnetic Fields ◽  
The Universe ◽  
Universe Evolution

Nonlinear electrodynamics with two-dimensional parameters is studied. The range of electromagnetic fields, when principles of causality, unitarity and the classical stability hold, are obtained. A singularity of the electric field at the center of charges is absent within our model and there are corrections to the Coulomb law as [Formula: see text]. The universe inflation takes place in the background of stochastic magnetic fields. The second stage of the universe evolution is the radiation era so that the graceful exit exists. We estimated the spectral index, the tensor-to-scalar ratio, and the running of the spectral index that are in a rough accordance with the PLANCK and WMAP data.

scholarly journals Acceleration of universe by nonlinear electromagnetic fields

2016 ◽  
Vol 25 (11) ◽  
pp. 1640002 ◽  
Author(s):  
S. I. Kruglov
Keyword(s):  
Electromagnetic Fields ◽  
Spectral Index ◽  
Accelerated Expansion ◽  
Gravitation Field ◽  
Dimensional Parameter ◽  
Deceleration Phase ◽  
Classical Stability ◽  
Expansion Of The Universe ◽  
Stochastic Magnetic Field ◽  
The Universe

A new model of nonlinear electromagnetic fields possessing a dimensional parameter [Formula: see text] is proposed. Electromagnetic fields are considered as the source of the gravitation field and accelerated expansion of the universe is driven by nonlinear electromagnetic fields. We consider the magnetic universe and the stochastic magnetic field is a source of the universe acceleration. After the universe inflation and the accelerated expansion the universe decelerates. We show the causality of the model and a classical stability at the deceleration phase. The spectral index, the tensor-to-scalar ratio and the running of the spectral index were estimated that approximately fulfil the PLANCK, WMAP and BICEP2 data.

scholarly journals Rational nonlinear electrodynamics causes the inflation of the universe

2020 ◽  
Vol 35 (26) ◽  
pp. 2050168
Author(s):  
S. I. Kruglov
Keyword(s):  
Magnetic Fields ◽  
Electric Field ◽  
Electromagnetic Fields ◽  
Ricci Tensor ◽  
De Sitter Space ◽  
Nonlinear Electrodynamics ◽  
De Sitter ◽  
Number Formula ◽  
Stochastic Magnetic Fields ◽  
The Universe

The source of the universe inflation is electromagnetic fields obeying rational nonlinear electrodynamics proposed earlier. Within this model the singularities of the electric field at the center of charges, the Ricci scalar, the Ricci tensor squared and the Kretschmann scalar are absent. We consider the universe which is filled by stochastic magnetic fields. It is demonstrated that the inflation lasts approximately [Formula: see text] s with the reasonable [Formula: see text]-folding number [Formula: see text]. The inflation starts from de Sitter space–time and after the universe inflation end it decelerates approaching the radiation era.

On generalized partially null Mannheim curves in Minkowski space-time

2016 ◽  
Vol 46 (1) ◽  
pp. 159-170 ◽  
Author(s):  
Emilija Nešović ◽  
Milica Grbović
Keyword(s):  
Minkowski Space ◽  
Space Time ◽  
Minkowski Space Time

COSMOLOGICAL EFFECTS OF NONLINEAR ELECTRODYNAMICS

2005 ◽  
Vol 20 (11) ◽  
pp. 2421-2430 ◽  
Author(s):  
M. NOVELLO
Keyword(s):  
Nonlinear Electrodynamics ◽  
Global Properties ◽  
The Universe

We present some consequences induced by nonlinear electrodynamics on the global properties of the universe.

scholarly journals A MAXWELL-LIKE FORMULATION OF GRAVITATIONAL THEORY IN MINKOWSKI SPACE–TIME

2007 ◽  
Vol 16 (06) ◽  
pp. 1027-1041 ◽  
Author(s):  
EDUARDO A. NOTTE-CUELLO ◽  
WALDYR A. RODRIGUES
Keyword(s):  
Gravitational Field ◽  
Minkowski Space ◽  
Gravitational Theory ◽  
Space Time ◽  
Lorentzian Geometry ◽  
Field Equations ◽  
Yang Mills ◽  
Minkowski Space Time ◽  
Clifford Bundle ◽  
Gauge Fixing

Using the Clifford bundle formalism, a Lagrangian theory of the Yang–Mills type (with a gauge fixing term and an auto interacting term) for the gravitational field in Minkowski space–time is presented. It is shown how two simple hypotheses permit the interpretation of the formalism in terms of effective Lorentzian or teleparallel geometries. In the case of a Lorentzian geometry interpretation of the theory, the field equations are shown to be equivalent to Einstein's equations.

scholarly journals CHARGED PARTICLES AND THE ELECTRO-MAGNETIC FIELD IN NONINERTIAL FRAMES OF MINKOWSKI SPACE–TIME II: "APPLICATIONS: ROTATING FRAMES, SAGNAC EFFECT, FARADAY ROTATION, WRAP-UP EFFECT"

2010 ◽  
Vol 07 (02) ◽  
pp. 185-213 ◽  
Author(s):  
DAVID ALBA ◽  
LUCA LUSANNA
Keyword(s):  
Minkowski Space ◽  
Faraday Rotation ◽  
Rotating Disk ◽  
Space Time ◽  
Sagnac Effect ◽  
Electro Magnetic Field ◽  
Minkowski Space Time ◽  
Relativistic Extension ◽  
Rotating Frames ◽  
Electro Magnetic

We apply the theory of noninertial frames in Minkowski space–time, developed in the previous paper, to various relevant physical systems. We give the 3 + 1 description without coordinate singularities of the rotating disk and the Sagnac effect, with added comments on pulsar magnetosphere and on a relativistic extension of the Earth-fixed coordinate system. Then we study properties of Maxwell equations in noninertial frames like the wrap-up effect and the Faraday rotation in astrophysics.

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