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Interacting quintessence and the coincidence problem
Astrophysics · Submitted 6 Apr 2004
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Furthermore, we show that an interaction between dark matter and dark energy can drive the transition from an early matter dominated era to a phase of accelerated expansion with a stable, stationary ratio of the energy densities of both components.
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The abstract, sentence by sentence
We investigate the role of a possible coupling of dark matter and dark energy. In particular, we explore the consequences of such an interaction for the coincidence problem, i.e., for the question, why the energy densities of dark matter and dark energy are of the same order just at the present epoch. We demonstrate, that, with the help of a suitable coupling, it is possible to reproduce any scaling solution $\rho_X \propto \rho_M a^\xi$, where $a$ is the scale factor of the Robertson-Walker metric and $\xi$ is a constant parameter. $\rho_X$ and $\rho_M$ are the densities of dark energy and dark matter, respectively. Furthermore, we show that an interaction between dark matter and dark energy can drive the transition from an early matter dominated era to a phase of accelerated expansion with a stable, stationary ratio of the energy densities of both components.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We investigate the role of a possible coupling of dark matter and dark energy. | contribution 0.96 | 0.87 | 0.03 | hedged possibility 0.68 |
| s1 | In particular, we explore the consequences of such an interaction for the coincidence problem, i.e., for the question, why the energy densities of dark matter and dark energy are of the same order just at the present epoch. | contribution 0.58 | 0.60 | 0.07 | unclear 0.42 |
| s2 | We demonstrate, that, with the help of a suitable coupling, it is possible to reproduce any scaling solution $\rho_X \propto \rho_M a^\xi$, where $a$ is the scale factor of the Robertson-Walker metric and $\xi$ is a constant parameter. | result 0.99 | 0.92 | 0.25 | asserted 0.90 |
| s3 | $\rho_X$ and $\rho_M$ are the densities of dark energy and dark matter, respectively. | background 0.89 | 0.15 | 0.03 | asserted 0.92 |
| s4 | Furthermore, we show that an interaction between dark matter and dark energy can drive the transition from an early matter dominated era to a phase of accelerated expansion with a stable, stationary ratio of the energy densities of both components. | result 1.00 | 0.93 | 0.64 | asserted 0.99 |
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The paper
Original abstract
We investigate the role of a possible coupling of dark matter and dark energy. In particular, we explore the consequences of such an interaction for the coincidence problem, i.e., for the question, why the energy densities of dark matter and dark energy are of the same order just at the present epoch. We demonstrate, that, with the help of a suitable coupling, it is possible to reproduce any scaling solution $\rho_X \propto \rho_M a^\xi$, where $a$ is the scale factor of the Robertson-Walker metric and $\xi$ is a constant parameter. $\rho_X$ and $\rho_M$ are the densities of dark energy and dark matter, respectively. Furthermore, we show that an interaction between dark matter and dark energy can drive the transition from an early matter dominated era to a phase of accelerated expansion with a stable, stationary ratio of the energy densities of both components.
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References
How the literature uses it
1 arXiv paper cite this in 1 sentence
Papers whose main result relates to this one's
States the same result 1 paper
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We show that a suitable interaction between a scalar field and a matter fluid in a spatially homogeneous and isotropic spacetime can drive the transition from a matter dominated era to an accelerated expansion phase and simultaneously solve the coincidence problem of our present Universe.
Interacting quintessence solution to the coincidence problem · 0.88
Papers citing it
Cites it as background 1 paper
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One of the most explored ones was solving the coincidence problem [ref]
Probing Interacting Dark Sector with the next generation of gravitational-wave detectors · Theoretical models · 0.82
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