Initial conditions of the universe: how much isocurvature is allowed?
We investigate the constraints imposed by current data on correlated mixtures of adiabatic and nonadiabatic primordial perturbations. We discover subtle flat directions in parameter space that tolerate large (approximately 60%) fractions of nonadiabatic fluctuations. In particular, larger values of...
| Main Authors: | , , , , |
|---|---|
| 格式: | Journal article |
| 語言: | English |
| 出版: |
2004
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