Connecting Quarks to the Cosmos...black holes at the edge of the Universe! Swift GRB 090423 z = 8.2...
Transcript of Connecting Quarks to the Cosmos...black holes at the edge of the Universe! Swift GRB 090423 z = 8.2...
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Michael S Turner
Connecting Quarks to the CosmosInstitute for Nuclear Theory
29 June to 10 July 2009
Inflationary Cosmology I
Michael S. TurnerKavli Institute for Cosmological Physics
The University of Chicago
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Michael S Turner
Quarks and the Cosmos: Quarks and the Cosmos: Convergence of Frontiers of Particle Physics, Nuclear Physics and Astrophysics/Cosmology
• What is the dark matter particle? • How did neutrinos shape the Universe and what are they
telling us about the unification of forces? • What is the dark energy that is causing the Universe to
accelerate?• What are Nature’s highest energy particles and how are
they accelerated?• How did the chemical elements originate?• How are quantum mechanics and gravity reconciled?• What happens when black holes collide?• What are space and time and where did they come from?• What was the dynamite behind the big bang?
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Michael S Turner
Cosmology Cosmology is a is a
young scienceyoung scienceits story only begins 60 years its story only begins 60 years
after Darwin,after Darwin,300 years after the 300 years after the
invention of the telescopeinvention of the telescope
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Michael S Turner
19161916--1918: General Relativity & 1918: General Relativity & ΛΛ
PS: Never mind Λ
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Michael S Turner
1929: Just One Number K 1929: Just One Number K (error bars not needed, velocity in km)
Hubble & Hubble & HumansonHumanson: few 100 galaxies, z < 0.1: few 100 galaxies, z < 0.1
K (H0) = 550 km/s/Mpc
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Michael S Turner
Cosmology: The Search for Cosmology: The Search for Two Numbers Two Numbers … Sandage 1970
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Michael S Turner
Landau on Landau on CosmologistsCosmologists
Often in Error, Often in Error, Never in Doubt!Never in Doubt!
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Michael S Turner
and at U Mass
The Redbook, a manual for faculty members that explained what a university was, and
what it wasn't. It cited two courses one wouldn't find in a curriculum of higher education: witchcraft and cosmology.
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Michael S Turner
Discovery of Cosmic Microwave Background, 1964
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Michael S Turner
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Michael S Turner
““The Standard ModelThe Standard Model””Hot Big Bang (circa 1972)Hot Big Bang (circa 1972)
““Reality (physics) BasedReality (physics) Based””•• BBN (nuclear physics)BBN (nuclear physics)•• CMB (atomic physics)CMB (atomic physics)•• Structure Formation (Structure Formation (gravgrav. .
physics)physics)•• Begins at 0.01 secBegins at 0.01 sec•• ΩΩ00 ~ 0.1 (baryons)~ 0.1 (baryons)Big QuestionsBig Questions•• ““The The naughtsnaughts””: H: H00, t, t00, , ΩΩ00•• Large entropy per baryonLarge entropy per baryon•• Hadron WallHadron Wall•• Origin of density Origin of density
perturbationsperturbations
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Michael S Turner
1980s: The Go Go Junk Bond Days 1980s: The Go Go Junk Bond Days of Early Universe Cosmologyof Early Universe Cosmology
““Creativity BasedCreativity Based””•• InflationInflation•• Cosmic StringsCosmic Strings•• BaryogenesisBaryogenesis•• Magnetic Magnetic
MonopolesMonopoles•• Phase TransitionsPhase Transitions•• Hot and Cold Dark Hot and Cold Dark
MatterMatter•• Decaying ParticlesDecaying Particles•• KaluzaKaluza--KleinKlein
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Michael S Turner
1990s: Beginning of Data1990s: Beginning of Data--driven driven CosmologyCosmology
• COBE! and CMB experiments• Redshift surveys (CfA, IRAS, 2dF, SDSS)• Large-scale velocity field measurements• Gravitational lensing• Big telescopes (Keck, …) with big CCD
cameras• HST, X-ray, gamma-ray, IR, …
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Big Glass on the Ground: Big Glass on the Ground: 4 VLT, 2 4 VLT, 2 KecksKecks, 2 , 2 GeminisGeminis and and
2 2 MagellansMagellans
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Great Observatories in Space: Great Observatories in Space: Hubble, Spitzer, Chandra, and Hubble, Spitzer, Chandra, and
FermiFermi
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Giant CCD Cameras
100 Megapixel
Gigapixel
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How far can you see on a clear
day?Back to the birth
of galaxies
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How far can you see on a clear day with x-ray eyes?To supermassive black holes at the
edge of the Universe!
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Swift GRB 090423 z = 8.2 GROND photo-zBirth of a Black Hole at the Edge of the Universe
Greiner et al.
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Michael S Turner
2000s: Era of Precision Cosmology2000s: Era of Precision Cosmology
““Fisher BasedFisher Based””• Cosmological
parameters• Tests of inflation, CDM• Correlating large,
complex data sets• Cosmological
Consistency• Physical parameters
(e.g., neutrino mass)
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Michael S Turner
In the midst of a revolutionary period of discovery -- powerful
ideas and instruments
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Quarks and the Cosmos
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Michael S Turner
Two Really Important IdeasTwo Really Important IdeasThat Changed CosmologyThat Changed Cosmology
with deep connections between quarks and the cosmos
Inflation:Inflation: brief period of rapid (accelerated) expansion accounts for smoothness, flatness; heat of the big bang; and seed inhomogeneities
Particle dark matter:Particle dark matter: bulk of the dark matter that holds the Universe together resides in a sea of elementary particles left over from the big bang
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H0 = 70 ± 7 km/s/Mpc
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… and Dr. Sandage, H0 is now measured and q0 is negative!
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Michael S TurnerBOOMERanG
DASI
Decoding the Cosmic Decoding the Cosmic Rosetta StoneRosetta Stone
Maxima CBI
ACBARACBAR
CBI
COBE
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Michael S Turner
The Universe circa 380,000 yrsThe Universe circa 380,000 yrsWMAP
±0.001% Fluctuations
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Michael S Turner
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Michael S Turner
Curve = concordance cosmology
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Michael S TurnerSloa
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igita
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Sur
vey
sdss
.org
Large-scale structure: Distribution of 106 galaxies
in the Universe today
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Michael S Turner
Tracing the history from a slightly lumpy Universe to galaxies ablaze
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Michael S Turner
TodayToday’’s s ““Consensus CosmologyConsensus Cosmology””based upon precision measurements
• From quark soup to nuclei and atoms to galaxies and large-scale structure
• Flat, accelerating Universe• Atoms, exotic dark matter & dark energy• Consistent with inflation• Precision cosmo parameters
–Ω0 = 1.005 ± 0.006 (uncurved)–ΩM = 0.280 ± 0.013–ΩB = 0.045 ± 0.0015–ΩDE = 0.72 ± 0.015–H0 = 70 ± 1.3 km/s/Mpc–t0 = 13.73 ± 0.12 Gyr–Nν = 4.4 ± 1.5
Consistent with Consistent with all data, all data,
laboratory and laboratory and cosmological!cosmological!
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Michael S Turner
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Michael S Turner
The Universe ObservedThe Universe Observed
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Michael S Turner
A Universe Full of Galaxies and Clusters of Galaxies
• 1011 galaxies!• Density of galaxies:
~0.001/Mpc3
• Typical mass 1012 solar mass (2 x 1045 g)
• Range: 106 to 1013 solar masses
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Michael S Turner
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Michael S Turner
Clusters of Galaxies: Largest Bound and Relaxed Objects
Perseus Cluster
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Michael S Turner
Coma Cluster of Galaxies
• Masses from 1013 to 1016 solar masses• X-ray bright (hot gas)• 5% of galaxies are found in rich clusters
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Michael S Turner
Isotropy (same in all directions):Galaxy Distribution on Sky
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Michael S Turner
Isotropy & Homogeneity: at 400,000 yrs CMB
Intensity Scale: ±0.01%
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Michael S Turner
Homogeneity (same everywhere): Galaxy Distribution
2dF
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Michael S TurnerSloa
n D
igita
l Sky
Sur
vey
sdss
.org
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Michael S Turner
•Expansion = Scaling up•Single “Cosmic Scale Factor”
R(t) Summarizes Expansion
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Michael S Turner
Our Universe
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Michael S Turner
Cosmological Cosmological RedshiftRedshiftAll physical distances get stretched with
cosmic scale factor, Rtoday = 1.0• Wavelength of a photon (redshift z)
• Momenta of particles too: p ~ 1/R• Distance between galaxiesNB: but not the size of self-bound objects (from atoms to stars to galaxies & clusters)
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Michael S Turner
UV light (1216 Å) from the early
Universe redshiftedto near IR.
The Universe was ~7 times smaller!
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Michael S Turner
1992: COBE Maps &
Blackbody Spectrum
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Michael S TurnerGiant Dipole in the Sky: Milky Way is
moving toward Leo at 600 km/sec
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Michael S Turner
COBE Proves Copernicus
Right!
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Michael S TurnerSloa
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igita
l Sky
Sur
vey
sdss
.org
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Michael S Turner
Cosmological ParametersCosmological Parameters
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Michael S Turner
CMB (first to second peak)Ωbh2 = 0.0225 ± 0.0006
vs.BBN (Deuterium)
Ωbh2 = 0.0213 ± 0.0013~5% agreement
ΩΩbb = 0.044 = 0.044 ±± 0.0020.002
Precision Cosmology Indeed!
h = H0/100 km/s/Mpc ~ 0.7
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Michael S Turner
FriedmannFriedmann EquationsEquationsMatter tells space how to bend
(“flat”, Euclidean Universe)
• H = expansion rate (“Hubble constant”)• Total energy density ρ and total pressure p• Solutions:
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Michael S Turner
Evolution of Matter/EnergyEvolution of Matter/Energyspace tells matter how to move
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Michael S Turner
Three Epochs Dominated by Three Epochs Dominated by Different Forms of EnergyDifferent Forms of Energy
1. Rad dominatedR ~ t1/2 thermal bathR < 10-4, t < 104 yrs
2. Matter dominatedR ~ t2/3 struc. formst ~ 104 yrs – 1010 yrs
3. Dark EnergyR ~ eHt
acceleratedexpansiont > 1010 yrs
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Michael S Turner
Structure FormationStructure FormationGravitational amplification of small (few parts in 105)
density inhomogeneities to the structure seen today during matter dominated
epoch, δρ/ρ α R(t)
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Michael S Turner
Thermal Bath Thermal Bath For most of its early
history: thermal equilibrium (departures
are very important –not all Fe today!)
• For kT > mc2
particle/antiparticle pairs as abundant as photons• Energy density:
ρ = g*π2T4/30g* counts dof
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Michael S Turner
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Michael S Turner
Relativistic Degrees of FreedomRelativistic Degrees of Freedom
Quark/Hadron
All SM Particles
γ/neutrinos
e± pairs
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Michael S Turner
RadiationRadiation--dominated Universedominated Universe