cosmological constant
The solution to the cosmological constant problem
... To account for the very low mass density associated with Dark Energy and the Cosmological Constant, a new approach to the ground state of empty space is presented. The resulting model for the vacuum state ...
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Conformally coupled scalar solitons and black holes with negative cosmological constant
... negative cosmological constant allows for the existence of black holes whose horizon has nontrivial topology, we consider, apart from spherically symmetric solutions, topological black holes ...
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Why Zeldovich Failed to Estimate the Precise Value of Cosmological Constant in Planck Unit?
... Notwithstanding, from Equation (1) he estimated its value only larger by 9 orders of magnitude in pion mass but there is no clear reason or explanation to take this mass. Furthermore, this expression was emulated ...
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How an Effective “Cosmological Constant” May Affect a Minimum Scale Factor, to Avoid a Cosmological Singularity (Breakdown of the First Singularity Theorem)
... the cosmological constant en- ...a cosmological constant, as given by Ellis, Ma- artens, and MacCallum [3], and that is the Bianchi I uni- verse model, as given on page 459 ...
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Galaxy formation efficiency and the multiverse explanation of the cosmological constant with EAGLE simulations
... the cosmological constant ( Λ ) permit structure to form in the universe at ...the cosmological constant is large and positive will expand so rapidly that gravitational structures, such as ...
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Astronomical Tests for Extended Gravity: Possible Constraints on f(R) with Vanishing Cosmological Constant
... the cosmological constant, is a strong stimulus for the modification of ...effective cosmological constant disappear in the low curvature regime, therefore models of such class are called “ ...
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Local Observers in an Expanding Universe: Is the Cosmological Constant Correlated with Thermodynamic Entropy?
... kept constant, despite the black hole ...vacuum’s cosmological constant, that causes cosmic expansion, could be one of the sources of the increases in thermodynamic entropy detected by local ...
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The Cosmological Constant: 2nd Order Quantum Mechanical Correction to the Newton Gravity
... from which we can readily see that the GE weak gravity limit, on macroscopic scale at the first-order, coincides with the general relativity equation leading to the Newtonian potential of gravity. The first contribution ...
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Gravitational mechanisms to self tune the cosmological constant: obstructions and ways forward
... the theoretical estimate based on a TeV scale cut-off, be- yond which new symmetries may emerge. The precise details of this tuning are extremely sensitive to the small print of high energy physics, in complete violation ...
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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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Cosmological Constant Effects on the Properties of Mass Twin Compact Stars
... the cosmological constant effects in compact stars interiors in the framework of Einstein’s ...a cosmological constant Λ in compact stars is motivated by the mechanism of acceleration of the ...
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Minkowskian Solution of General Relativity with Cosmological Constant and the Accelerating Universe
... REMARK 2 Our non-usual (classical) fluid (2) cannot be confused with usual (quantum) black energy (2bis) in the framework of Cosmology. Standard method in Cosmology consists in associating a supplementary stress-tensor T ...
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Holographic Bound in Quantum Field Energy Density and Cosmological Constant
... the cosmological constant, , should be related to the num- ber of ...positive cosmological constant one obtains, by holographic entropy bounds, [10,12] an upper limit to the number of ...
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Prediction of Cosmological Constant Λ in Veneziano Ghost Theory of QCD
... the cosmological costant is the valid model of dark energy, a sufficiently large cosmological constant will cause galaxies and supernovae to accelerate away from us, as has been observed, in contrast ...
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On the existence of topological hairy black holes in SU(N) EYM theory with a negative cosmological constant
... non-zero cosmological constant is known to yield very interesting results, due to the differing geometry it bestows upon the ...negative cosmological constant), it changes completely; we get ...
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Non Linear Electrodynamics Contributing to a Minimum Vacuum Energy (“Cosmological Constant”) Allowed in Early Universe Cosmology
... minimum cosmological constant, ...the cosmological evolution from a near ...of cosmological space-time evolu- ...the cosmological constant, which has major im- plications to ...
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On the linear stability of solitons and hairy black holes with a negative cosmological constant: the odd-parity sector
... How to solve the initial value problem in terms of gauge-invariant quantities is discussed in Appendix B. A nice fact is that the cosmological constant does not appear explicitly in the above system, it ...
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On the linear stability of solitons and hairy black holes with a negative cosmological constant: the even-parity sector
... Using a recently developed perturbation formalism based on curvature quantities, we complete our investigation of the linear stability of black holes and solitons with Yang-Mills hair and a negative cosmological ...
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Topological black holes in su(N) Einstein Yang Mills theory with a negative cosmological constant
... A natural question is whether there exist analogues of the purely magnetic, spherically symmetric black holes in su (N) EYM in adS with nonspherical event horizon topology. Re- cently this question was answered in the ...
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Topological black holes in su(N) Einstein-Yang-Mills theory with a negative cosmological constant
... Many properties of black holes with nontrivial matter field hair in asymptotically adS space–time also differ from the properties of their asymptotically flat counterparts. In su( 2 ) Einstein–Yang–Mills (EYM) theory, ...
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