Dynamics and cosmological evolution in Λ-varying cosmology

2019/11/30 by G. Papagiannopoulos, Pavlina Tsiapi, Spyros Basilakos +1
Physics and Astronomy · #Black Holes and Theoretical Physics #COSMIC cancer database #Cosmological model #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Dynamics (music) #Galaxies: Formation, Evolution, Phenomena #Lambda-CDM model #Physical cosmology #Point (geometry) #Stability (learning theory) #gr-qc

paper · pdf · doi:10.1140/epjc/s10052-019-7600-z

This manuscript has been accepted for publication in the European Physical Journal C

openalex created_date 2019/12/05 · openalex publication_date 2020/01/01 · arxiv created 2020/01/11 · arxiv updated 2020/02/19 · openalex updated_date 2026/08/05

Abstract

Abstract We study the dynamical properties of a large body of varying vacuum cosmologies for which dark matter interacts with vacuum. In particular, performing the critical point analysis we investigate the existence and the stability of cosmological solutions which describe de-Sitter, radiation and matter dominated eras. We find several cases of varying vacuum models that admit stable critical points, hence they can be used in describing the cosmic history.

Citations

• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Cosmological Constant - the Weight of the Vacuum
• Mach's Principle and a Relativistic Theory of Gravitation
• Cosmological constant, renormalization group and Planck scale physics
• Classification of scalar field potentials with cosmological scaling solutions
• Hubble expansion and structure formation in time varying vacuum models
• Time-dependent cosmological term
• Second-order scalar-tensor field equations in a four-dimensional space
• FROM INFLATION TO DARK ENERGY THROUGH A DYNAMICAL Λ: AN ATTEMPT AT ALLEVIATING FUNDAMENTAL COSMIC PUZZLES
• The cosmological constant and dark energy
• Hubble expansion and structure formation in the ``running FLRW model'' of the cosmic evolution
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• THEHUBBLE SPACE TELESCOPECLUSTER SUPERNOVA SURVEY. V. IMPROVING THE DARK-ENERGY CONSTRAINTS ABOVEz> 1 AND BUILDING AN EARLY-TYPE-HOSTED SUPERNOVA SAMPLE
• Quintessence: A Review
• Cosmological consequences of a rolling homogeneous scalar field
• Planck2013 results. XVI. Cosmological parameters
• Renormalization-group running of the cosmological constant and its implication for the Higgs boson mass in the standard model
• The galileon as a local modification of gravity
• Cosmological solutions off(T)gravity
• Relaxing the σ 8 -tension through running vacuum in the Universe