Constraints on the speed of sound in the k-essence model of dark energy
Abstract We consider a k-essence scalar field model for the late-time cosmic acceleration in which the sound speed, parametrized as $$c_s$$ c s is constant. We compute the relevant background and perturbation quantities corresponding to the observables like cosmic microwave background, type Ia super...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-12547-6 |