🗊Презентация Inflation and string cosmology

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Inflation and String Cosmology Andrei Linde
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Inflation and String Cosmology Andrei Linde

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Contents: From the Big Bang theory to Inflationary Cosmology Eternal inflation and string theory landscape
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Contents: From the Big Bang theory to Inflationary Cosmology Eternal inflation and string theory landscape

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Two major cosmological discoveries: The new-born universe experienced rapid acceleration (inflation) A new (slow) stage of acceleration started 5 billion years ago (dark energy)
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Two major cosmological discoveries: The new-born universe experienced rapid acceleration (inflation) A new (slow) stage of acceleration started 5 billion years ago (dark energy)

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Closed, open or flat universe
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Closed, open or flat universe

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Big Bang Theory
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Big Bang Theory

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Inflationary Universe
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Inflationary Universe

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Inflation
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Inflation

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What was before the Big Bang? What was before the Big Bang? Why is our universe so homogeneous (better than 1 part in 10000) ? Why is it isotropic (the same in all directions)? Why all of its parts started expanding simultaneously? Why is it flat? Why parallel lines do not intersect? Why it contains so many particles?
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What was before the Big Bang? What was before the Big Bang? Why is our universe so homogeneous (better than 1 part in 10000) ? Why is it isotropic (the same in all directions)? Why all of its parts started expanding simultaneously? Why is it flat? Why parallel lines do not intersect? Why it contains so many particles?

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Where did the energy come from?
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Where did the energy come from?

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Energy of matter in the Big Bang theory
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Energy of matter in the Big Bang theory

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Inflation and string cosmology, слайд №11
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Inflation as a theory of a harmonic oscillator
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Inflation as a theory of a harmonic oscillator

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Einstein equation: Einstein equation: Klein-Gordon equation:
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Einstein equation: Einstein equation: Klein-Gordon equation:

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Logic of Inflation:
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Logic of Inflation:

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Inflation and string cosmology, слайд №15
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Inflation and string cosmology, слайд №16
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Inflation and string cosmology, слайд №17
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Inflation and string cosmology, слайд №18
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Inflation and string cosmology, слайд №19
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Inflation and string cosmology, слайд №20
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WMAP and the temperature of the sky
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WMAP and the temperature of the sky

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Inflation and string cosmology, слайд №22
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On a much, much larger scale…
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On a much, much larger scale…

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Predictions of Inflation: 1) The universe should be homogeneous, isotropic and flat,  = 1 + O(10-4) [ Observations: the universe is homogeneous, isotropic and flat,  = 1 + O(10-2) Inflationary perturbations should be gaussian and adiabatic, with flat spectrum, ns = 1+ O(10-1) Observations: perturbations are gaussian and adiabatic, with flat spectrum, ns = 1 + O(10-2)
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Predictions of Inflation: 1) The universe should be homogeneous, isotropic and flat,  = 1 + O(10-4) [ Observations: the universe is homogeneous, isotropic and flat,  = 1 + O(10-2) Inflationary perturbations should be gaussian and adiabatic, with flat spectrum, ns = 1+ O(10-1) Observations: perturbations are gaussian and adiabatic, with flat spectrum, ns = 1 + O(10-2)

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Inflation and string cosmology, слайд №25
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Inflation and string cosmology, слайд №26
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Inflation and string cosmology, слайд №27
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Inflation and string cosmology, слайд №28
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Inflation and string cosmology, слайд №29
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Inflation and string cosmology, слайд №30
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Inflation and string cosmology, слайд №31
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Inflation and string cosmology, слайд №32
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Inflation and string cosmology, слайд №33
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Kandinsky Universe
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Kandinsky Universe

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Inflation and string cosmology, слайд №35
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Self-reproducing Inflationary Universe
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Self-reproducing Inflationary Universe

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"It is said that there is no such thing as a free lunch. But the universe is the ultimate free lunch". "It is said that there is no such thing as a free lunch. But the universe is the ultimate free lunch". Alan Guth
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"It is said that there is no such thing as a free lunch. But the universe is the ultimate free lunch". "It is said that there is no such thing as a free lunch. But the universe is the ultimate free lunch". Alan Guth

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Inflation and string cosmology, слайд №38
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