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On Oct 20, 2011, at 11:59 AM, art wagner wrote:

Machian Origin of the Entropic Gravity and Cosmic Acceleration

Merab Gogberashvili, Igor Kanatchikov
(Submitted on 29 Dec 2010 (v1), last revised 19 Oct 2011 (this version, v2))
We discuss the emergence of relativistic effects in the Machian universe with a global preferred frame and use thermodynamic considerations to clarify the origin of gravity as an entropic force and the origin of dark energy/cosmic acceleration as related to the Hawking-Unruh temperature at the universe's horizon.
The issue is WHEN is the horizon?
It can't be our past particle horizon. It must be our future event horizon to explain the dark energy as advanced Wheeler-Feynman Hawking radiation.

The Hawking temperature a Planck distance away from our future horizon is

T ~ (1/Planck Distance))^1/2(Cosmological Constant)^1/4

Blackbody radiation law is that the energy density ~ T^4

pluggin in the Stephan-Boltzmann constant gives

Future Wheeler-Feynman black body radiation density back from our future horizon is hc(Cosmological Constant)/(Planck Area)

which is the correct number.

Cosmological Constant = 1/(Area-Entropy of our Future Event Horizon)

Our future event-horizon is the Wheeler-Feynman total absorber of last resort of all retarded photons inside the future event horizon.

T. Davis Ph.D. Fig 1.1c modified (above)

above is for our future de Sitter event horizon (modified from T. Davis PhD 5.1)

This explains ARROW OF TIME if all interior matter fields are 3D hologram images back from our future 2D surrounding surface future event horizon whose time-dependent area is the total thermodynamic entropy of the interior bulk. This pixelated 2D surface is a fractal cosmic computer - we are its computations. Crazy idea for sure.