- #1
spaghetti3451
- 1,344
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It is common is cosmology to study density fluctuations in the early universe.
However, it is also common to assume that the background space is homogeneous and isotropic and use the FRW metric.
I do not see how density fluctuations can be possible in a homogeneous and isotropic space. Can you please explain?
However, it is also common to assume that the background space is homogeneous and isotropic and use the FRW metric.
I do not see how density fluctuations can be possible in a homogeneous and isotropic space. Can you please explain?