Cosmology with Mimetic Matter

Abstract

We consider minimal extensions of the recently proposed Mimetic Dark Matter and show that by introducing a potential for the mimetic non-dynamical scalar field we can mimic nearly any gravitational properties of the normal matter. In particular, the mimetic matter can provide us with inflaton, quintessence and even can lead to a bouncing nonsingular universe. We also investigate the behaviour of cosmological perturbations due to a mimetic matter. We demonstrate that simple mimetic inflation can produce red-tilted scalar perturbations which are largely enhanced over gravity waves.

19 pages

Cited by in corpus (25)

• Mimetic gravity: a review of recent developments and applications to cosmology and astrophysics
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• Disformal Transformations, Veiled General Relativity and Mimetic Gravity
• Dynamical behavior in mimetic F(R) gravity
• Mimetic dark matter, ghost instability and a mimetic tensor-vector-scalar gravity
• Imperfect Dark Matter
• Cosmological perturbations in mimetic matter model
• Viable Mimetic Completion of Unified Inflation-Dark Energy Evolution in Modified Gravity
• Quanta of Geometry: Noncommutative Aspects
• New Modified Mimetic Gravity
• Higher Derivative Mimetic Gravity
• Late time cosmological approach in mimetic $f(R,T)$ gravity
• Hamiltonian Formulation of Mimetic Gravity
• Modified Dust and the Small Scale Crisis in CDM
• Black hole solutions in mimetic Born-Infeld gravity
• Dark Energy Oscillations in Mimetic $F(R)$ Gravity
• Higher order derivative coupling to gravity and its cosmological implications
• Gravitational focusing of Imperfect Dark Matter
• Forms of action for perfect fluid in General Relativity and mimetic gravity
• Cosmology of a Lorentz violating Galileon theory
• Aspects of Late-time Evolution in Mimetic $F(R)$ Gravity
• Direct couplings of mimetic dark matter and their cosmological effects
• De Sitter and power-law solutions in some models of modified gravity
• Integrability conditions of quasi-Newtonian cosmologies in modified gravity
• Disformal invariance of continuous media with linear equation of state