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Published Online May 4, 2006
Science DOI: 10.1126/science.1128570

Perspectives

Submitted on April 10, 2006
Accepted on April 24, 2006

The Vacuum Energy Crisis

Alexander Vilenkin 1*

1 Department of Physics and Astronomy, Tufts University, Medford, MA, 02155, USA.

* To whom correspondence should be addressed.
Alexander Vilenkin , E-mail: vilenkin{at}cosmos.phy.tufts.edu

Quantum theory requires that even empty space has energy, but understanding the magnitude of this energy is a major unsolved puzzle. A controversial model of the universe as a cyclic series of big bangs may offer one explanation.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)