Abstract
The first law of thermodynamics and the holographic principle applied to an arbitrary large cosmic causal horizon are shown to naturally demand a zero cosmological constant and a non-zero dynamical dark energy in the form of the holographic dark energy. A semiclassical analysis shows that the holographic dark energy has a parameter d = 1 and an equation of state comparable to current observational data if the entropy of the horizon saturates the Bekenstein-Hawking bound. This result indicates that quantum field theory should be modified on a large scale to explain the dark energy. The relations among the dark energy, the quantum vacuum energy and the entropic gravity are also discussed.
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Lee, JW. Zero cosmological constant and nonzero dark energy from the holographic principle. Journal of the Korean Physical Society 63, 1088–1093 (2013). https://doi.org/10.3938/jkps.63.1088
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DOI: https://doi.org/10.3938/jkps.63.1088