scholarly journals Static spherically symmetric space-time and nonlinear spinor field

2020 ◽  
pp. 1-13
Author(s):  
Saha Bijan
Keyword(s):  
Symmetric Space ◽  
Spinor Field ◽  
Space Time ◽  
Einstein Equations ◽  
Spherically Symmetric ◽  
Nonlinear Spinor ◽  
Simple Method ◽  
Spinor Fields

We studied nonlinear spinor fields in the framework of a static spherically symmetric space-time. In doing so we have suggested a rather simple method to solve the corresponding Einstein equations. As an example, a nonlinear spinor field was considered. The corresponding equations were solved analytically and numerically.

scholarly journals Spinors in Cylindrically Symmetric Space–Time

Universe ◽  
2020 ◽  
Vol 6 (9) ◽  
pp. 152
Author(s):  
Bijan Saha
Keyword(s):  
Gravitational Field ◽  
Symmetric Space ◽  
Spinor Field ◽  
Bianchi Type ◽  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Space Time ◽  
Type I ◽  
Nonlinear Spinor ◽  
Cylindrically Symmetric

We studied the behavior of nonlinear spinor field within the scope of a static cylindrically symmetric space–time. It is found that the energy-momentum tensor (EMT) of the spinor field in this case possesses nontrivial non-diagonal components. The presence of non-diagonal components of the EMT imposes three-way restrictions either on the space–time geometry or on the components of the spinor field or on both. It should be noted that the analogical situation occurs in cosmology when the nonlinear spinor field is exploited as a source of gravitational field given by the Bianchi type-I cosmological model.

NONSTATIC SPHERICALLY SYMMETRIC SPACE–TIME AND GLOBAL MONOPOLE

1998 ◽  
Vol 13 (08) ◽  
pp. 1221-1228
Author(s):  
SUBENOY CHAKRABORTY ◽  
LALIT BISWAS
Keyword(s):  
Symmetric Space ◽  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Space Time ◽  
Einstein Equations ◽  
Symmetric Model ◽  
Spherically Symmetric ◽  
Global Monopole ◽  
Spherically Symmetric Model

Under the assumption of functional separability of the metric coefficients, we have solved the Einstein equations for nonstatic spherically symmetric model. The energy–momentum tensor for the monopole configuration is taken in the form [Formula: see text]. Also the trajectories have been studied in different situations.

scholarly journals ON POSSIBLE GEOMETRIC AND ASTROPHYSICAL EFFECTS OF NONLINEAR SPINOR FIELDS IN THE MEGAMIR, MACROWORLD AND MICROWORLD

Metaphysics ◽  
2020 ◽  
pp. 82-93
Author(s):  
V. G Krechet
Keyword(s):  
General Relativity ◽  
Gravitational Interaction ◽  
Space Time ◽  
Elementary Particles ◽  
Nonlinear Spinor ◽  
Evolution Of The Universe ◽  
Spinor Fields ◽  
Astrophysical Objects ◽  
Local Space ◽  
The Universe

In this article, within the framework of general relativity, the possible effect of the gravitational interaction of Dirac nonlinear spinor fields on the evolution of the Universe, on the formation of astrophysical objects and on the formation of the geometry of the local space-time of elementary particles with spin ħ / 2 is considered.

On the Functional Definition and Calculation of Global Observables in Nonlinear Spinor Field Quantum Theory

1972 ◽  
Vol 27 (7) ◽  
pp. 1058-1072
Author(s):  
H Stumpf
Keyword(s):  
Quantum Theory ◽  
Spinor Field ◽  
Free Field ◽  
Functional Space ◽  
Nonlinear Spinor ◽  
Spinor Theory ◽  
Spinor Fields

Abstract Nonlinear spinor theory contains unobservable field operators which cannot be identified with free field operators. Therefore for the comparson with experiment a theory of observables for nonlinear spinor fields is required. This theory is developed for global observables by means of a map into functional space, and leads to a functional quantum theory of nonlinear spinor fields

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