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This research explores the late-time evolution of cosmic structures using a model where dark matter and dark energy interact through diffusion.

Observational constraints of diffusive dark-fluid cosmology

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Observational analysis supports a diffusive dark fluid model driving cosmic acceleration.

This research explores the late-time evolution of cosmic structures using a model where dark matter and dark energy interact through diffusion.
Derived background evolution and perturbation equations for a dark fluid model.
Employed MCMC simulations to obtain cosmological parameters.
Analyzed recent measurements for statistical parameter estimation.
Investigated density contrast growth and redshift space distortion for structure formation insights.
Demonstrated that the diffusive model can effectively drive cosmic acceleration through energy exchange.
Established the model resembles a Chaplygin gas during energy transfer from dark matter to dark energy.
Found that dark matter's density contrast significantly exceeds that of dark energy during structure formation.
Identified minor deviations from Lambda cold dark matter at low redshifts, suggesting dimensional impacts on structure growth.

Sahlu et al. (2025) studied this question.

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View Full Paper

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Authors

Observational analysis supports a diffusive dark fluid model driving cosmic acceleration.

This research explores the late-time evolution of cosmic structures using a model where dark matter and dark energy interact through diffusion.
Derived background evolution and perturbation equations for a dark fluid model.
Employed MCMC simulations to obtain cosmological parameters.
Analyzed recent measurements for statistical parameter estimation.
Investigated density contrast growth and redshift space distortion for structure formation insights.
Demonstrated that the diffusive model can effectively drive cosmic acceleration through energy exchange.
Established the model resembles a Chaplygin gas during energy transfer from dark matter to dark energy.
Found that dark matter's density contrast significantly exceeds that of dark energy during structure formation.
Identified minor deviations from Lambda cold dark matter at low redshifts, suggesting dimensional impacts on structure growth.

Sahlu et al. (2025) studied this question.

View Full Paper

Ask AI

Bookmark