Next Article in Journal
The Baryon Phase-Transition Model and the too strange Standard Model of Cosmology
Next Article in Special Issue
3-Form Cosmology: Phantom Behaviour, Singularities and Interactions
Previous Article in Journal / Special Issue
Non-Standard Hierarchies of the Runnings of the Spectral Index in Inflation
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessReview
Universe 2017, 3(1), 20; doi:10.3390/universe3010020

Dark Energy and Spacetime Symmetry

1
A.F. Ioffe Physico-Technical Institute of the Russian Academy of Sciences, Polytekhnicheskaja 26, St. Petersburg 194021, Russia
2
Department of Mathematics and Computer Science, University of Warmia and Mazury, Słoneczna 54, 10-710 Olsztyn, Poland
Academic Editors: Mariusz P. Dąbrowski, Manuel Krämer and Vincenzo Salzano
Received: 23 January 2017 / Revised: 27 February 2017 / Accepted: 1 March 2017 / Published: 3 March 2017
(This article belongs to the Special Issue Varying Constants and Fundamental Cosmology)
View Full-Text   |   Download PDF [280 KB, uploaded 3 March 2017]   |  

Abstract

The Petrov classification of stress-energy tensors provides a model-independent definition of a vacuum by the algebraic structure of its stress-energy tensor and implies the existence of vacua whose symmetry is reduced as compared with the maximally symmetric de Sitter vacuum associated with the Einstein cosmological term. This allows to describe a vacuum in general setting by dynamical vacuum dark fluid, presented by a variable cosmological term with the reduced symmetry which makes vacuum fluid essentially anisotropic and allows it to be evolving and clustering. The relevant solutions to the Einstein equations describe regular cosmological models with time-evolving and spatially inhomogeneous vacuum dark energy, and compact vacuum objects generically related to a dark energy: regular black holes, their remnants and self-gravitating vacuum solitons with de Sitter vacuum interiors—which can be responsible for observational effects typically related to a dark matter. The mass of objects with de Sitter interior is generically related to vacuum dark energy and to breaking of space-time symmetry. In the cosmological context spacetime symmetry provides a mechanism for relaxing cosmological constant to a needed non-zero value. View Full-Text
Keywords: dark energy; de Sitter vacuum; spacetime symmetry; relaxing cosmological constant; dark matter; regular black hole remnants; mass and spacetime symmetry dark energy; de Sitter vacuum; spacetime symmetry; relaxing cosmological constant; dark matter; regular black hole remnants; mass and spacetime symmetry
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Dymnikova, I. Dark Energy and Spacetime Symmetry. Universe 2017, 3, 20.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Universe EISSN 2218-1997 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top