[PDF] Top 20 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 ... See full document

... gravitational constant is, of course, an old idea, going back to the work of Dirac in his large number hypothesis ...Newton’s constant, H is Hubble’s parameter, and G is the time-varying gravitational ... See full document

... isotropic cosmological models in Brans-Dicke theory have been ...the cosmological term Λ ( ) ξ to the Brans-Dicke Lagrangian using Robertson-Walker line element and energy tensor of a perfect fluid were ... See full document

... FRW cosmological model in Lyra’s geometry with time dependent displacement ...FRW cosmological model in Lyra’s geometry with constant deceleration ...fluid cosmological model in Lyra’s ... See full document

... The scarcity of viable proposals for solving the cos- mological constant problem has led some to abandon naturalness, and seek anthropic explanations within a scannable landscape of vacua [3, 8]. ... See full document

... CD ghost theory that we used in this work, since it is an analogue of two-dimensional theory based on the Schw- inger model [18,19], replacing the vector gauge field by two scalar fields. These scalar fields have ... See full document

... the solution of Einstein’s field equations for the variable Λ-G model, because we can unify the two independent variables Λ and G into one simple function of the CMB ... See full document

... . It was found that at a lower initial temperature, increasing the number of relativistic degrees of freedom (defined in terms of extra neutrino species) or its combined impact with WIMPs results in a significant ... See full document

... limit solution of Einstein’s Field Equation with inclusion of the Cosmological Constant  , under the constraint of spherical isotropy, produces a gravitational wave equation with an underlying ... See full document

... where ρ is the fluidal mass density. It must be present for giving a solution of Einstein’s Field Equation with Λ ≠ 0 for the vacuum without any baryonic sources. Assuming the correctness of (4), the fluidal ... See full document

... –I cosmological model which is gener- aliza-tion of Friedmann-Robertson-Walker (FRW) ...model. Cosmological model with cosmological constant are se- rious participants to describe the dynamics ... See full document

... the cosmological constant problem is thereby solved to first ...the cosmological constant can be reproduced, even if the SM gauge couplings are almost identical in both ... See full document

... The cosmological constant problem is particularly relevant in the context of the experimental confirmation of the accelerated expansion of the Universe ... See full document

... Lord Kelvin believes that the electromagnetic aether must also generate gravity. Based on a the- orem of V. Fock on the mass tensor of an elastic continuum, the contravariant energy-momentum tensor of the Ω(1) substratum ... See full document

... cyclic solution a(t) is solved in [21, ...standard cosmological assump- tions, only two conditions: (i) the spatial sections must have positive spatial curvature (K = +1), and (ii) the late time effective ... See full document

... The cosmological constant problem is reanalyzed by imposing the limitation of the number of degrees of freedom (d.o.f.) due to entropy bounds directly in the calculation of the energy density of a ... See full document

... obtained solution for two cases: viz absence of particle creation and for particle creation of Einstein’s field equation of a locally-rotationally-symmetric Bianchi type-V universe with cosmological ... See full document

... this problem and they came to the sim- ilar conclusions as ours, but they applied in their works the Cartan’s approach to the connection in the principal bundle [2, 13, ... See full document

... hole solution, which has a scalar field diverging on the event horizon ...this solution is unstable [2], and cannot be considered as a valid example of a black hole with scalar ... See full document

... In the right side of Equation (47) we have the value associated with the difference of geometry from the Rie- mann one (the trace of a tensor T αβ for the electromagnetic field is equal to zero in Riemann geometry ... See full document