Abstract

It is suggested that dark energy is the energy of the Hawking radiation from a cosmic horizon. Despite of its extremely low Gibbons-Hawking temperature, this radiation could have the appropriate magnitude O(MP2H2)O(M_P^2 H^2) and the equation of state to explain the observed cosmological data if there is a Planck scale UV-cutoff, where HH is the Hubble parameter.

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