The Vacuum Energy from a New Perspective

Details The Vacuum Energy from a New Perspective The Vacuum Energy from a New Perspective

2001-03-12

arxiv.org/abs/astro-ph/0103161v3

Astronomy and Astrophysics

Astrophysics

3 pages; to be published in the proceedings of the 20th Texas Symposium on Relativistic Astrophysics, edited by J. C. Wheeler

Scientific paper

10.1063/1.1419576

It is commonly believed that the vacuum energy problem points to the need for (1) a radically new formulation of gravitational physics and (2) a new principle which forces the vacuum stress-energy tensor (as measured by gravity) to be nearly zero. Here we point out that a new fundamental theory contains both features: (1) In this theory the vierbein is interpreted as the "superfluid velocity" associated with the order parameter for a GUT-scale Higgs condensate. (2) The vacuum stress-energy tensor is exactly zero in the vacuum state, because the action is extremalized with respect to variations in the order parameter. With inhomogeneously-distributed matter present, the vacuum stress-energy tensor is shifted away from zero.

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