On primordial cosmological density fluctuations in the Einstein-Cartan gravity and COBE data (CROSBI ID 81012)
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Palle, Davor
engleski
On primordial cosmological density fluctuations in the Einstein-Cartan gravity and COBE data
We study cosmological density fluctuations within a covariant and gauge-invariant fluid-flow approach for a perfect fluid in the Einstein-Cartan gravity and derive the corresponding Raychaudhuri type of inhomogeneous coupled differential evolution equations of the second order. It appears that the quantum fluctuations of spin trigger primordial density inhomogeneities at the scale of weak interactions. These inhomogeneities are then involved precisely to the value measured be COBE mission at the scale of decoupling.
cosmology; primordial density fluctuations; structure formation
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