The end of the universe

The end of the universe

• 1.
  THE END OFTHE UNIVERSE Sandra Gil, Elvira Riveiro, Diana Tejera
• 2.
  INDEX • Introduction • Close Universe: Big Crunch • Open Universe • Flat Universe • Theories of open and flat Universe: Big Freeze and Big Rip • Other theories: Multiverse, False Vacuum, Cosmic Uncertainty.
• 3.
  INTRODUCTION • Einstein´stheory of General Relativity • Density Parameter() • Ultimate fate depends on: – Shape: Flat, Open, Close – Dark energy – Equation of State
• 4.
  CLOSED UNIVERSE •Geometry: Sphere • Triangle > 180º • Two forms to end: – Lacking dark energy , leads to the Big Crunch – With dark energy, expansion continues forever
• 5.
  BIG CRUNCH •Based on Einstein´s theory of general relativity • Universe´s density > Critical density • Collapse into Black holes, then the Big Crunch • Big Bounce, another Universe
• 6.
  OPEN UNIVERSE •Geometry: Hyperbolic • Triangle < 180º • Continuous expansion • Two endings: –Big Rip –Big Freeze
• 7.
  FLAT UNIVERSE •Ω= 1 • Triangle = 180º • Two forms to end: – Without dark energy – With dark energy
• 8.
  BIG FREEZE 1.StelliferousEra: Today´s era. 2.Degenerate Era: Death of Stars and Black Holes formation. 3.Black Hole Era: Death of Black Holes 4.Dark Era: Nothing except for subatomic particles
• 9.
  BIG RIP •Increase in the density of dark energy • Increase in Hubble´s constant • Everything disintegrates
• 10.
  OTHER THEORIES: MIULTIVERESE • Set of Universes: –Finite –Infinite • Form together: -Time -Space -Energy -Matter
• 11.
  OTHER THEORIES: FALSEVACUUM • Vacuum metastability event: – Alter everything – Affect the foundation of matter, energy and spacestime • Many-worlds interpretation – Decay from a false vacuum to a true vacuum – New worlds – Some decay, some stay as before
• 12.
  OTHER THEORIES: COSMIC UNCERTAINITY • Truthness of inflation • Lack of proveness • The end still unknown