KFU. Card publication. Einstein-aether theory: dynamics of relativistic particles with spin or polarization in a Gödel-type universe

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EINSTEIN-AETHER THEORY: DYNAMICS OF RELATIVISTIC PARTICLES WITH SPIN OR POLARIZATION IN A GöDEL-TYPE UNIVERSE

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Balakin Aleksandr Borisovich, author

Popov Vladimir Aleksandrovich, author

Bibliographic description in the original language

A.B. Balakin and V.A. Popov, Einstein-aether theory: dynamics of relativistic particles with spin or polarization in a Gödel-type universe. JCAP04(2017)025

Annotation

In the framework of the Einstein-aether theory we consider a cosmological model, which describes the evolution of the unit dynamic vector field with activated rotational degree of freedom. We discuss exact solutions of the Einstein-aether theory, for which the space-time is of the Gödel-type, the velocity four-vector of the aether motion is characterized by a non-vanishing vorticity, thus the rotational vectorial modes can be associated with the source of the universe rotation. The main goal of our paper is to study the motion of test relativistic particles with a vectorial internal degree of freedom (spin or polarization), which is coupled to the unit dynamic vector field. The particles are considered as the test ones in the given space-time background of the Gödel-type; the spin (polarization) coupling to the unit dynamic vector field is modeled using exact solutions of three types. The first exact solution describes the aether with arbitrary Jacobson's coupling constants; the second one relates to the case, when the Jacobson's constant responsible for the vorticity is vanishing; the third exact solution is obtained using three constraints for the coupling constants. The analysis of the exact expressions, which are obtained for the particle momentum and for the spin (polarization) four-vector components, shows that the interaction of the spin (polarization) with the unit vector field induces a rotation, which is additional to the geodesic precession of the spin (polarization) associated with the universe rotation as a whole.

Keywords

modified gravity, dark energy, relativistic spin particle

The name of the journal

Journal of Cosmology and Astroparticle Physics

URL

http://iopscience.iop.org/article/10.1088/1475-7516/2017/04/025

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=260488&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Balakin Aleksandr Borisovich	ru_RU
dc.contributor.author	Popov Vladimir Aleksandrovich	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	A.B. Balakin and V.A. Popov, Einstein-aether theory: dynamics of relativistic particles with spin or polarization in a Gödel-type universe. JCAP04(2017)025	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=260488&p_lang=2	ru_RU
dc.description.abstract	Journal of Cosmology and Astroparticle Physics	ru_RU
dc.description.abstract	In the framework of the Einstein-aether theory we consider a cosmological model, which describes the evolution of the unit dynamic vector field with activated rotational degree of freedom. We discuss exact solutions of the Einstein-aether theory, for which the space-time is of the Gödel-type, the velocity four-vector of the aether motion is characterized by a non-vanishing vorticity, thus the rotational vectorial modes can be associated with the source of the universe rotation. The main goal of our paper is to study the motion of test relativistic particles with a vectorial internal degree of freedom (spin or polarization), which is coupled to the unit dynamic vector field. The particles are considered as the test ones in the given space-time background of the Gödel-type; the spin (polarization) coupling to the unit dynamic vector field is modeled using exact solutions of three types. The first exact solution describes the aether with arbitrary Jacobson's coupling constants; the second one relates to the case, when the Jacobson's constant responsible for the vorticity is vanishing; the third exact solution is obtained using three constraints for the coupling constants. The analysis of the exact expressions, which are obtained for the particle momentum and for the spin (polarization) four-vector components, shows that the interaction of the spin (polarization) with the unit vector field induces a rotation, which is additional to the geodesic precession of the spin (polarization) associated with the universe rotation as a whole.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	modified gravity	ru_RU
dc.subject	dark energy	ru_RU
dc.subject	relativistic spin particle	ru_RU
dc.title	Einstein-aether theory: dynamics of relativistic particles with spin or polarization in a Gödel-type universe	ru_RU
dc.type	Articles in international journals and collections	ru_RU