PPT Slide
Observational evidence has emerged:
- The expansion of the Universe is accelerating
- Geometry is flat (inflation & CMB anisotropy obs)
- WM = Wlum+ Wdkm ? 1/3 by direct measurement
- Age ? 13 Gyr v. flat t ? 10 Gyr
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- These results support each other & inflationary theory of the Big Bang and point to L ? 0 in the present epoch the dark energy (the quantum vacuum energy)
- Live in a flat universe, dominated by dark-energy WM+ WL ? 1/3 + 2/3 = 1 & dark-matter WM ? Wdkm, (if L = constant) will expand faster, faster, forever
- ‘The cosmological constant problem’? new physics!