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An Effective Cosmological Constant From an Entropic Formulation of Gravity
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abstract
We use the ideas of entropic gravity to derive the FRW cosmological model and show that for late time evolution we have an effective cosmological constant. By using the first law of thermodynamics and the modified entropy area relationship derived from the supersymmetric Wheeler-DeWitt equation of the Schwarzschild black hole, we obtain modifications to the Friedmann equations that in the late time regime gives an effective positive cosmological constant. Therefore, this simple model can account for the dark energy component of the universe by providing an entropic origin to the cosmological constant $\Lambda$.
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Cited by 2 Pith papers
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Static Black Holes and Iyer-Wald Entropy in $f(\mathcal{R},\mathcal{K})$ Gravity
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Extended Effective Field Theory of Dark Energy: Ghost Condensate Dark Energy with Sextic Dispersion Relation in de Sitter Spacetime
A sextic ghost condensate dark energy model is shown to produce a matter-density-dependent correction to the Newtonian potential and a frequency-dependent gravitational wave speed in de Sitter spacetime.
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