Fluctuations in the Ginzburg–Landau Theory of Dark Energy: Internal (In)consistencies in the Planck Data Set

• Published in: The Astrophysical journal Vol. 931; no. 2; pp. 148 - 154
• Main Authors: Banihashemi, Abdolali, Khosravi, Nima
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01-06-2022; IOP Publishing
• Subjects: Astrophysics; Big Bang theory; Cosmic microwave background; Cosmic microwave background radiation; Dark energy; Fluctuations; Weak gravitational lensing
• ISSN: 0004-637X; 1538-4357
• DOI: 10.3847/1538-4357/ac6dd6

In this work, predictions of the Ginzburg–Landau theory of dark energy (GLT) for cosmic microwave background (CMB) lensing are studied. We find that the time and scale dependence of the dark energy fluctuations in this semiphenomenological model is favored by data in several ways. First, unlike ΛCDM,
ℓ
≤ 801 and
ℓ
> 801 ranges of the CMB angular power spectrum are consistent in this framework. Second, the lensing amplitude
A
L
is completely consistent with unity when GLT is confronted with CMB data, even without including CMB lensing data. Therefore the lensing anomaly is absent in this model. Although the background evolution of dark energy in this model is able to reconcile the
H
0
inferred from CMB with that directly measured through observing nearby standard candles, the inclusion of Baryon Acoustic Oscillations (BAO) data brings the inferred
H
0
close to what ΛCDM predicts and hence the Hubble tension is not fully eased. However, this does not affect the posterior on
A
L
and the lensing anomaly is still absent.