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7 de abr. de 2013 · Shinji Tsujikawa. Quintessence is a canonical scalar field introduced to explain the late-time cosmic acceleration. The cosmological dynamics of quintessence is reviewed, paying particular attention to the evolution of the dark energy equation of state w.
- Shinji Tsujikawa
- 2013
A generalized quintessence model is presented which corresponds to a richer vacuum structure that, besides a time-dependent, slowly varying scalar field, contains a varying cosmological term. From first principles we determine a number of scalar-field potentials that satisfy the constraints
- Pedro F. González-Díaz
- 2000
1 de jun. de 2018 · Commonly considered quintessential cosmological models are based on the introduction of a spatially-inhomogeneous slowly-evolving real scalar field rolling down a potential similar to the inflaton field in inflation theory.
- Rossen I. Ivanov, Emil M. Prodanov
- 2018
4 de oct. de 2013 · Quintessence is a canonical scalar field introduced to explain the late-time cosmic acceleration. The cosmological dynamics of quintessence is reviewed, paying particular attention to the evolution of the dark energy equation of state w.
1 de dic. de 2023 · Under a Creative Commons license. open access. Abstract. In the framework of scalar-tensor gravity, we consider non-flat interacting quintessence cosmology where a scalar field is interacting with dark matter. Such a scalar field can be a standard or a phantom one.
We stress three important features of the quintessence or Q-component: the time evolution of the equation-of-state; the length-scale dependence of the speed of propagation of the fluctuations in the Q-component; and, the contribution of quintessence fluctuations to the CMB anisotropy spectrum. Download to read the full chapter text. Chapter PDF.
