ES2 - Theoretical Issues in GR |
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Speaker |
DADHICH, NARESH |
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| Talk Title |
Λ is a constant of spacetime and has nothing to do with Vacuum Energy |
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Abstract |
We argue that like velocity of light, Λ is a constant of spacetime, and these are the only two most fundamental constants of spacetime structure. Like gravitational field energy, vacuum en- ergy must gravitate but not through a stress tensor instead more subtly in line with the former by enlarging spacetime framework. Unfortunately this enlargement would not become visible until there comes about quantum theory of spacetime or gravity. One of possiblities could be that it gravitates through higher dimension. The important message that emrges is that Λ has therefore nothing to do with vacuum energy and hence is free to have any value as determeined by ac- celerating expansion of the Universe. The incorrigibly embarrassing number 10120 is therefore nothing but the statement that in units of the Planck area, the Universe measures as much! |
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