Is the Cosmological Coincidence
a Problem?
Navin Sivanandam
AIMS – March 26th 2012
The Coincidence
(Lineweaver and Egan)
Anthropics
Universe consistent with life
(Carter, 1974)
“We should be typical amongst
observers.” (Vilenkin, 1995)
(Lineweaver and Egan)
Solutions
Carbon(Garriga et al.)
Planets(Lineweaver and Egan)
Carbon Bias/
Late times/
Multiverse
“A measurement of a quantity
should be typical of all possible
measurements of that quantity.”
Measuring the coincidence is easy,
when measuring the expansion is easy.
Normalization
Number of
objects
Assumptions
“We may live in interesting times, but
if we did not we would be blissfully
unaware of the fact.”
Is the Cosmological Coincidence a Problem
Is the Cosmological Coincidence a Problem
Is the Cosmological Coincidence a Problem
Is the Cosmological Coincidence a Problem
Is the Cosmological Coincidence a Problem
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Is the Cosmological Coincidence a Problem

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Is the Cosmological Coincidence a Problem

  1. 1. Is the Cosmological Coincidence a Problem? Navin Sivanandam AIMS – March 26th 2012
  2. 2. The Coincidence
  3. 3. (Lineweaver and Egan)
  4. 4. Anthropics
  5. 5. Universe consistent with life (Carter, 1974)
  6. 6. “We should be typical amongst observers.” (Vilenkin, 1995)
  7. 7. (Lineweaver and Egan)
  8. 8. Solutions
  9. 9. Carbon(Garriga et al.) Planets(Lineweaver and Egan) Carbon Bias/ Late times/ Multiverse
  10. 10. “A measurement of a quantity should be typical of all possible measurements of that quantity.”
  11. 11. Measuring the coincidence is easy, when measuring the expansion is easy.
  12. 12. Normalization Number of objects
  13. 13. Assumptions
  14. 14. “We may live in interesting times, but if we did not we would be blissfully unaware of the fact.”

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