The New Cosmology

Abstract

Over the past three years we have determined the basic features of our Universe. It is spatially flat; accelerating; comprised of 1/3 a new form of matter, 2/3 a new form of energy, with some ordinary matter and a dash of massive neutrinos; and it apparently began from a great burst of expansion (inflation) during which quantum noise was stretched to astrophysical size seeding cosmic structure. This ``New Cosmology'' greatly extends the highly successful hot big-bang model. Now we have to make sense of it. What is the dark matter particle? What is the nature of the dark energy? Why this mixture? How did the matter -- antimatter asymmetry arise? What is the underlying cause of inflation (if it indeed occurred)?

12 pages Latex (ws-p10x7.cls). To appear in the Proceedings of the XXth International Symposium on Photon and Lepton Interactions (Rome, Italy, 2001)

References in corpus (5)

• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• Probing the dark energy: methods and strategies
• How old is the Universe ? Setting new constraints on the age of the Universe
• A Sober Assessment of Cosmology at the New Millennium

Cited by in corpus (13)

• Entropy Bounds and Dark Energy
• Halo Substructure And The Power Spectrum
• Holography and Variable Cosmological Constant
• Testing the running of the cosmological constant with Type Ia Supernovae at high z
• The Concordance Cosmic Star Formation Rate: Implications from and for the Supernova Neutrino and Gamma Ray Backgrounds
• The observability of gamma-rays from neutralino annihilations in Milky Way substructure
• A model of the Universe including Dark Energy accounted for by both a Quintessence Field and a (negative) Cosmological Constant
• The angular size - redshift relation in power-law cosmologies
• The Cold Dark Matter crisis on galactic and subgalactic scales
• Lepton Flavor Violation and the Origin of the Seesaw Mechanism
• Internal symmetry in Bianchi type-I cosmologies
• Flat Cosmology with Coupled Matter and Dark Energies
• Cosmic Strings and Quintessence