The Endless Universe w/Neil Turok (Cambridge) feynman.princeton.edu/~steinh.

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Presentation transcript:

The Endless Universe w/Neil Turok (Cambridge) feynman.princeton.edu/~steinh

Today’s Standard Model (big bang + inflation) big bang inflation

Today’s Standard Model (big bang + inflation) big bang inflation V Y New ingredient: Scalar field ( Y)

Today’s Standard Model (big bang + inflation) big bang inflation New ingredient: Scalar field ( Y) V Y

Wilkinson Microwave Anisotropy Probe

radiation matter dark energy ?? Today’s Standard Model (big bang + inflation) big bang inflation

radiation matter dark energy ?? Today’s Standard Model (big bang + inflation) big bang inflation ???

George Lemaitre Albert Einstein

t a(t) Richard Tolman

a(t) t Richard Tolman

Superstring theory “branes” The New Cyclic Universe

V Y Y Superstring theory Field theory “branes” The New Cyclic Universe

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce”

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” Reproduces successful predictions

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” Fewer ingredients: no need for inflation

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” Dark energy given a purpose

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” Avoids infinities (?)

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” More complete theory of cosmic history

Consensus (big bang + inflation) big bang inflation radiation matter dark energy ?? ??? Cyclic PJS & Neil Turok “bang” radiation matter dark energy “contraction” “crunch” the “bounce” Empirically distinguishable: e.g., gravitational waves

E-modes (energy fluctuations) B-modes (gravitational waves)

CAPMAPCAPMAP the Cosmic Anisotropy Polarization MAPper MAPper DASI, WMAP, Boomerang …. Planck, …. CMBPOL

FAQs: feynman.princeton.edu/~steinh/ Violates conservation of energy?Tolman problems?What happens at the bounce?

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