期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
卷 12, 期 10, 页码 1969-1982出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218271803004407
关键词
higher order theories of gravity; cosmology; quintessence
Quintessence issues can be achieved by taking into account higher order curvature invariants into the effective action of gravitational field. Such an approach is naturally related to fundamental theories of quantum gravity which predict higher order terms in loop expansion of quantum fields in curved space-times. In this framework, we obtain a class of cosmological solutions which are fitted against cosmological data. We reproduce encouraging results able to fit high redshift supernovae and WMAP observations. The age of the universe and other cosmological parameters are discussed in this context.
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