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Reconstructing Quintessence

Jan 12, 2021

11 pages

Published in:

Phys.Rev.D 103 (2021) 10, 103530

Published: May 22, 2021

e-Print:

2101.04666 [astro-ph.CO]

DOI:

10.1103/PhysRevD.103.103530

View in:

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Abstract: (APS)

We present an effective-field-theory-based reconstruction of quintessence models of dark energy directly from cosmological data. We show that current cosmological data possess enough constraining power to test several quintessence model properties for redshifts z∈[0,1.5] with no assumptions about the behavior of the scalar field potential. We use measurements of the cosmic microwave background, supernova distances, and the clustering and lensing of galaxies to constrain the evolution of the dark energy equation of state, swampland conjectures, the shape of the scalar field reconstructed potential, and the structure of its phase space. The standard cosmological model still remains favored by data and, within quintessence models, deviations from its expansion history are bounded to be below the 10% level at 95% confidence at any redshift below z=1.5.

Note:

10 pages, 8 figures

Cosmology
field theory: scalar
dark energy: equation of state
quintessence
redshift
cosmic background radiation
effective field theory
cosmological model
phase space
supernova

References(75)

Figures(8)

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