Phys. Rev. Lett. 86, 6 - 9 (2001)Limitations in Using Luminosity Distance to Determine the Equation of State of the Universe |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
Irit Maor1, Ram Brustein1, and Paul J. Steinhardt2
1Department of Physics, Ben Gurion University, Beer-Sheva 84105, Israel
2Department of Physics, Princeton University, Princeton, New Jersey 08540
See Also: Erratum
Received 19 July 2000
Supernova searches have been been suggested as a method for determining precisely the current value and time variation of the equation of state, w, of the dark energy component responsible for the accelerated expansion of the Universe. We show that the method is fundamentally limited by the fact that luminosity distance depends on w through a multiple integral relation that smears out information about w and its time variation. The effect degrades the resolution of w that can be obtained from current data.
©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v86/p6
DOI: 10.1103/PhysRevLett.86.6
PACS: 98.62.Py, 98.80.Es
See Also
Erratum: Irit Maor, Ram Brustein, and Paul J. Steinhardt, Erratum: Limitations in Using Luminosity Distance to Determine the Equation of State of the Universe [Phys. Rev. Lett. 86, 6 (2001)], Phys. Rev. Lett. 87, 049901 (2001)
[ Abstract | Previous article | Next article | Issue 1 ]
About PROLA | Terms and Conditions | Subscriptions | Search | Help
Content in PROLA © 2008 by The American Physical Society All rights reserved. PROLA™ is a trademark of The American Physical Society. Use of APS online journals implies that the user has read and agrees to the Terms and Conditions in the Subscription Agreement.