We investigate large-scale cosmological perturbation in the Universe with multiple perfect fluids. Using the long-wavelength approximation with the Hamilton-Jacobi method, we derive a formula for the gauge-invariant comoving curvature perturbation. As an application of our approach, we examine large-scale perturbation in a brane cosmology.
|Number of pages||10|
|Journal||Classical and Quantum Gravity|
|Publication status||Published - Aug 21 2002|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)