Emergent Gravity And The Cosmological Constant Problem

Details Emergent Gravity And The Cosmological Constant Problem Emergent Gravity And The Cosmological Constant Problem

2007-11-19

arxiv.org/abs/0711.2797v2

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, two columns; Minor changes with new comments

Scientific paper

We address issues on the origin of gravity and the cosmological constant problem based on a recent understanding about the correspondence between noncommutative field theory and gravity. We suggest that the cosmological constant problem can be resolved in a natural way if gravity emerges from a gauge theory in noncommutative spacetime. Especially, we elucidate why the emergent gravity implies that vacuum energy does not gravitate but only fluctuations around the vacuum generate gravity. That is, a flat spacetime emerges from uniform condensation of energy, previously identified with the cosmological constant.

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