科研之友
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摘要
On the basis of quintessence models with anticorrelation between the quintessence fluctuations and adiabatic perturbations in the other matter components, we show that if the quintessence potential is sufficiently steep in the initial era, i.e., at the beginning of the radiation dominated epoch, the quintessence fluctuations can be large enough to sufficiently suppress the cosmic microwave background power spectrum at low multipoles without excess gravitational waves. The leaping kinetic term quintessence and the crossover quintessence models can realize such steep potentials at the initial stage, and therefore give rise to a low cosmic microwave background quadrupole as required by observations.
- 出版日期2007-7
