# Multi-field dark energy: Cosmic acceleration on a steep potential

@article{Akrami2020MultifieldDE, title={Multi-field dark energy: Cosmic acceleration on a steep potential}, author={Yashar Akrami and Misao Sasaki and Adam R. Solomon and Valeri Vardanyan}, journal={arXiv: Cosmology and Nongalactic Astrophysics}, year={2020} }

## 18 Citations

### Dark energy from inspiraling in field space

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

We find an exact solution of the equations of motion of a two-field cosmological model, which realizes multi-field dark energy. The latter is characterized by field-space trajectories with turning…

### Dynamical consistency conditions for rapid turn inflation

- Mathematics
- 2022

We derive consistency conditions for sustained slow roll and rapid turn inﬂation in two-ﬁeld cosmological models with oriented scalar ﬁeld space, which imply that inﬂationary models with ﬁeld-space…

### The String Swampland and de Sitter Vacua: A Consistent Perspective for Superstrings and Multi-fold Universes

- Physics
- 2022

: In a multi-fold universe, gravity emerges from Entanglement through the multi-fold mechanisms. As a result, gravity-like effects appear in between entangled particles that they be real or virtual.…

### Stringy multifield quintessence and the Swampland

- PhysicsJournal of High Energy Physics
- 2022

We consider quintessence models within 4D effective descriptions of gravity coupled to two scalar fields. These theories are known to give rise to viable models of late-time cosmic acceleration…

### Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies

- PhysicsJournal of High Energy Astrophysics
- 2022

### Cosmological dynamics of multifield dark energy

- PhysicsPhysical Review D
- 2022

We numerically and analytically explore the background cosmological dynamics of multiﬁeld dark energy with highly nongeodesic or “spinning” ﬁeld-space trajectories. These extensions of standard…

### Multifield mimetic gravity

- PhysicsPhysical Review D
- 2022

In this paper, we extend the mimetic gravity to the multi-field setup with a curved field space manifold. The multi-field mimetic scenario is realized via the singular limit of the conformal…

### Global dynamics of the hyperbolic Chiral-Phantom model

- Physics, MathematicsThe European Physical Journal Plus
- 2022

We perform a detailed analysis of the asymptotic behavior of a multi-field cosmological model with phantom terms. Specifically, we consider the Chiral-Phantom model consisting of two scalar fields…

### On the occurrence of finite-time singularities in Swampland-related quintessence dark energy models

- MathematicsInternational Journal of Geometric Methods in Modern Physics
- 2021

In this work, we focus on the phase space singularities of interactive quintessence model in the presence of matter fluid. This model is related to swampland studies, that the outcomes affect all…

### Quintessential α-attractor inflation: forecasts for Stage IV galaxy surveys

- Physics
- 2021

Single-field models of α-attractor quintessential inflation provide a unified picture of the two periods of early- and late-time cosmic acceleration, where both inflation and dark energy are…

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- 2020

Abstract
Multifield models with a curved field space have already been shown to be able to provide viable quintessence models for steep potentials that satisfy swampland bounds. The simplest…

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