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Kinetically Driven Quintessence
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abstract
Recently, a novel class of models for inflation has been found in which the inflationary dynamics is driven solely by (non-canonical) kinetic terms rather than by potential terms. As an obvious extension, we show that a scalar field with non-canonical kinetic terms alone behaves like an energy component which is time-varying and has negative pressure presently, i.e. quintessence. We present a model which has a constant equation of state, that is, a ``kinetic'' counterpart of the Ratra-Peebles model of a quintessence field with a potential term. We make clear the structure of the phase plane and show that the quintessential solution is a late-time attractor. We also give a model for the ``phantom'' component which has an equation of state with $w=p/\rho <-1$.
Forward citations
Cited by 23 Pith papers
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The Nature of Phantom Dark Energy and its Relation to Time Crystals
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Dark Energy from Time Crystals
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Constant-roll $\beta$-exponential inflation: Palatini formalism
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Extended Dark Energy analysis using DESI DR2 BAO measurements
Extended analysis of DESI DR2 data confirms robust evidence for dynamical dark energy with phantom crossing preference, stable under parametric and non-parametric modeling.
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Modified gravity theories supply viable mathematical frameworks for inflation, bounces, and dark energy eras that match observational data.
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Dark energy and cosmic acceleration
A review chapter summarizing the history, theory, and current observations of dark energy, presenting no new research results.
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