Dark energy and CMB anisotropy

Author(s)
Lam, Yukyam, 1982-
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Alternative title
Dark energy and Cosmic Microwave Background anisotropy
Other Contributors
Massachusetts Institute of Technology. Dept. of Physics.
Advisor
Edmund Bertschinger.
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Abstract
According to the WMAP and earlier COBE observations, the Cosmic Microwave Background (CMB) anisotropy power on large angular scales appears to be significantly lower than predicted by the standard model of cosmology. We propose a scalar field model of the dark energy as a mechanism for suppressing low l multipoles through late-Universe evolution of metric fluctuations and the integrated Sachs-Wolfe (ISW) effect. We find that for a constant dark energy equation of state, theoretical predictions actually give a larger (instead of a desired smaller) value of the quadrupole and other low l multipoles.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.
 
Includes bibliographical references (p. 59-60).
 
Date issued
2004
URI
http://hdl.handle.net/1721.1/32743
Department
Massachusetts Institute of Technology. Department of Physics
Publisher
Massachusetts Institute of Technology
Keywords
Physics.
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