cosmological constant Λ
Prediction of Cosmological Constant Λ in Veneziano Ghost Theory of QCD
... (4) The vacuum energy density, called dark energy den- sity, and a model with representing dark energy were reintroduced about three decades ago. See Ref. [5] for a review of the physics and cosmology of , with refe- ...
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Energy-Momentum Tensor and Parameters in Cosmological Model
... Cosmological constant Λ has a dramatic history. Since Einstein introduced Λ in 1917 to get a static and closed universe, the debate over whether Λ is zero or not has been repeated many ...
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Vol 6, No 6 (2015)
... the cosmological constant Λ to modify his own developed field equations of general ...this Λ term remains a focal point of interest in the context of quantum field theories, quantum gravity, ...
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Cosmological Constant Effects on the Properties of Mass Twin Compact Stars
... a cosmological constant ...EoS. Cosmological parameter values can shrink mass and radius values, eventually changing the topology from a standard hadronic EoS (black lines) into a quark EoS (red ...
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A theoretical calculation of the cosmological constant based on the theory of vacuum mechanics
... the cosmological constant Λ is also related to the energy-momentum tensor of vacuum ([4], ...the cosmological constant and a model of dark energy based on the theory of vacuum mechanics ...
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Anisotropic Universe Models with Positive Cosmological Constant
... mological constant, has been raised quite ...nonzero cosmological constant Λ has been entertained several times in the past for theoretical and observational reasons (the early history of ...
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The Solution Cosmological Constant Problem
... Cosmoloigical Constant Problem The cosmological constant problem arises at the intersection between general relativity and quantum field theory, and is regarded as a fundamental unsolved problem in ...
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General Relativity with a Positive Cosmological Constant as a Gauge Theory.
... We begin with a bit of information of the Einstein-Palatini (EP) action, then we present how Einstein fields equations can be derived from it. In the next section, we consider Einstein-Palatini action integral for ...
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A cosmological view on Milgrom’s acceleration constant
... acceleration constant and the Cosmological constant not only holds for galaxies, but also holds for the observable universe within the event horizon, in spite of the obvious difficulty to identify a ...
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Cosmological constant decaying with CMB temperature
... the cosmological constant Λ is simply expressed as a function of the cosmic microwave background (CMB) ...gravitational constant G and Λ are coupled with the CMB temper-ature, which ...
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Polytropic Bulk Viscous Cosmological Model with Variable G and Λ
... ρ, cosmological constant Λ, expansion scalar θ , shear scalar σ and coefficient of bulk viscosity η tend to infinite and when t → ∞, ρ, Λ, θ , η and σ tend to zero ...
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Accelerated Expansion of Space, Dark Matter, Dark Energy and Big Bang Processes
... the cosmological constant ...set Λ = 0 , Le- maître considered that this would be arbitrary. He treated Λ as a parameter of unknown value and showed that the expansion of space would ...
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Constraints on Dynamical Dark Energy with Precision Cosmological Data
... standard cosmological model ( Λ CDM), the energy density of the universe at present day is made up of 69% of DE described by a cosmological constant Λ , 26% of dark matter (DM) while ...
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An Exact Scalar Field Inflationary Cosmological Model Which Solves Cosmological Constant Problem, Dark Matter Problem and Other Problems of Inflationary Cosmology
... No cosmological model predicts or accounts for this ...of cosmological evolution equations are exact and no sort of approximations like slow roll approximation ...
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Study of Stability Analysis of a Grid-Connected Doubly Fed Induction Generator (DFIG)-based small Wind Farm
... Figure 4.1 (a)-(c) shows the eigenvalue loci for change in linking inductances from 0.5 µH to 5 µH at constant wind speed of 13.5 m/s. For two-turbine system connected to a grid, same valued linking inductances ...
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Minkowskian Solution of General Relativity with Cosmological Constant and the Accelerating Universe
... Einstein’s SR in 1905 consisted in dissolving a ghost: The old electromagnetic ether. Our relativistic approach involves also the dissolution of a ghost: the Dark Energy. This new cosmological ether becomes a pure ...
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Planck Constant as Adiabatic Invariant Characterized by Hubble’s and Cosmological Constants
... This incomplete list of problems indicates very serious gaps in our understanding of Nature. For the most cases, the problems are directly or implicitly appear from a misunderstanding of the basis of the quantum theory, ...
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Timeless State of Gravity: Possible Solution for Cosmological Constant problem
... We match non-inertial frames with local inertial frames at their connecting point through equating the relative gravitational red-shift with the gamma factor in local inertial frames. We got a timeless state of the ...
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Holographic Bound in Quantum Field Energy Density and Cosmological Constant
... corresponds to a self-similar rearrangement of d.o.f at different scales. From this point of view, the consistency between the holographic entropy bound for the cosmo- logical constant and the estimate of the ...
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Einstein Rosen Mesonic Perfect Fluid Cosmological Model with Time Dependent Λ Term
... non-static cosmological model is nonsingular; contracting and deceleration parameter indicates ...pendent cosmological term Λ is decreasing function of time and it approaches to small positive value ...
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