Elastic Inflation

Abstract

Inflation of a universe filled by an elastic continuous medium is considered. Elastic inflation, while capable of describing current observations, is qualitatively different from standard inflationary models. The scalar and tensor modes keep evolving after crossing the horizon. Due to this superhorizon evolution, the amplitude of the tensor mode (inflationary gravitational wave) is not simply proportional to the energy density of the universe at the time of horizon crossing. The spectral index of tensor modes can be positive.

12 pages

References in corpus (2)

• Cosmological parameters from SDSS and WMAP
• Ghost Inflation

Cited by in corpus (56)

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• On the possibility of blue tensor spectrum within single field inflation
• Blue-tilted Primordial Gravitational Waves from Massive Gravity
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• Probing The Early Universe Cosmology With NANOGrav: Possibilities and Limitations
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• The effective theory of fluids at NLO and implications for dark energy
• Nanohertz gravitational waves from NEC violation in the early universe
• Fluids, Superfluids and Supersolids: Dynamics and Cosmology of Self Gravitating Media
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• Solid Consistency
• Higher derivative scalar-tensor theory through a non-dynamical scalar field
• Solid Soft Theorems
• Quantization of Perturbations in an Inflating Elastic Solid
• Revisiting slow-roll dynamics and the tensor tilt in general single-field inflation
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• Tomography of flavoured leptogenesis with primordial blue gravitational waves
• Primordial Stochastic Gravitational Wave Background Anisotropies: in-in Formalization and Applications
• Some disquisitions on cosmological 2-form dualities
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• Primordial Tensor Non-Gaussianity from Massive Gravity
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• Inflationary tensor fossils deformed by solid matter -- scalar field interaction
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