WHAT WE KNOW AND WHAT WE DON'T KNOW ABOUT THE UNIVERSE
@article{Gleiser2004WHATWK, title={WHAT WE KNOW AND WHAT WE DON'T KNOW ABOUT THE UNIVERSE}, author={Marcelo Gleiser}, journal={International Journal of Modern Physics D}, year={2004}, volume={13}, pages={1381-1388} }
I present a non-technical and necessarily biased and incomplete overview of our present understanding of the physical universe and its constituents, emphasizing what we have learned from the explosive growth in cosmological and astrophysical data acquisition and some of the key open questions that remain. The topics are organized under the labels space, time, and matter. Most bibliographical references are for the non-expert.
One Citation
Semi-classical theory of quiet lasers. I: Principles
- Physics
- 2007
When light originating from a laser diode driven by non-fluctuating electrical currents is incident on a photo-detector, the photo-current does not fluctuate much. Precisely, this means that the…
References
SHOWING 1-10 OF 36 REFERENCES
Geometry and Destiny
- Physics
- 1999
The recognition that the cosmological constantmay be non-zero forces us to re-evaluate standardnotions about the connection between geometry and thefate of our Universe. An open Universe can…
Colloquium: Measuring and understanding the universe
- Physics
- 2003
Revolutionary advances in both theory and technology have launched cosmology into its most exciting period of discovery yet. Unanticipated components of the universe have been identified, promising…
The Cosmological Constant Problem
- Physics
- 1989
Astronomical observations indicate that the cosmological constant is many orders of magnitude smaller than estimated in modern theories of elementary particles. After a brief review of the history of…
The Age of the Universe and the Cosmological Constant Determined from Cosmic Microwave Background Anisotropy Measurements
- Physics
- 2001
If Ωtot = 1 and structure formed from adiabatic initial conditions, then the age of the universe, as constrained by measurements of the cosmic microwave background (CMB), is t0 = 14.0 ± 0.5 Gyr. The…
The Accelerating Universe: Infinite Expansion, the Cosmological Constant, and the Beauty of the Cosmos
- Physics
- 2000
Prologue. Beauty and the Beast. Expansion. The Case of the Missing Matter. Flat Is Beautiful. When Inflation Is Good. Creation. The Meaning of Life. A Universe Custom Made for Us? A Cosmological…
Constraining the topology of the universe.
- Mathematics, PhysicsPhysical review letters
- 2004
The first year data from the Wilkinson Microwave Anisotropy Probe are used to place stringent constraints on the topology of the Universe, and the nondetection rules out the possibility that the authors live in a universe with topology scale smaller than 24 Gpc.
The Very First Light: The True Inside Story of the Scientific Journey Back to the Dawn of the Universe
- Education
- 1996
In the early 1990s, a NASA-led team of scientists changed the way we view the universe. With the COBE (Cosmic Background Explorer) project, they showed that the microwave radiation that fills the…
A Brief History of Time: From the Big Bang to Black Holes
- Physics
- 1988
Was there a beginning of time? Could time run backwards? Is the universe infinite or does it have boundaries? These are just some of the questions considered in an internationally acclaimed…
Supersymmetry: Squarks, Photinos, and the Unveiling of the Ultimate Laws of Nature
- Physics
- 2000
"A fascinating account of the theoretical ideas behind supersymmetry...told by someone who has contributed deeply to the development of the field." -NatureFor most of human history, man has been…
The elegant universe : superstrings, hidden dimensions, and the quest for the ultimate theory
- Physics, Art
- 1999
Brian Greene, one of the world's leading string theorists, peels away layers of mystery to reveal a universe that consists of eleven dimensions, where the fabric of space tears and repairs itself,…