The Higgs Boson by Scientific American Editors

Author:Scientific American Editors
Language: eng
Format: epub
Publisher: The Rosen Publishing Group, Inc
Published: 2012-09-20T00:00:00+00:00

1. All our theories today seem to imply that the universe should contain a tremendous concentration of energy, even in the emptiest regions of space. The gravitational effects of this so-called vacuum energy would have either quickly curled up the universe long ago or expanded it to much greater size. The Standard Model cannot help us understand this puzzle, called the cosmological constant problem.

2. The expansion of the universe was long believed to be slowing down because of the mutual gravitational attraction of all the matter in the universe. We now know that the expansion is accelerating and that whatever causes the acceleration (dubbed “dark energy”) cannot be Standard Model physics.

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