New early dark energy
By Florian Niedermann, M. Sloth. 2019
137 citations recorded by the source corpus.
The authors discuss in detail a popular scenario to alleviate the current Hubble tension (different measurements of the expansion rate of the Universe show a 4.4 $\ensuremath{\sigma}$ discrepancy), namely ``early dark energy''. Hereby a false vacuum early on acts as an additional repulsive force (dark energy) but decays quickly enough to remain consistent with numerous other observational data. Contrary to the usual approach, a first order phase transition is considered, allowing in a minimal model a reduction of the tension to 2.5 $\ensuremath{\sigma}$.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/07dcf3eccd52c4bcba9a8234a56a1ad17f82fb8f
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In Astronomy and Astrophysics
- Guido D'Amico
- Pierre Zhang
- Tanvi Karwal
- Tristan L. Smith
- V. Poulin
- Henry Zheng
- L. Senatore
- Fa-yin Wang
In Nuclear and High Energy Physics
- Guido D'Amico
- Pierre Zhang
- Tanvi Karwal
- Tristan L. Smith
- V. Poulin
- Henry Zheng
- L. Senatore
- Fa-yin Wang
Citations in the corpus
- Cosmology Intertwined II: The Hubble Constant Tension (2020, unknown): “[112] F.”
- Hubble Tension: The Evidence of New Physics (2023, background): “2) Axion interacting with a dilaton [213]; (3) Power-law potential [214]; (4) Rock ’n’ roll [215]; (5) New early dark energy [216,217]; (6) Chain early dark energy [218]; (7) Anti-de Sitter phase [219,220]; (8) Gradusted dark energy [221]; (9) Acoustic dark energy [222,223]; (9.”
- The Ups and Downs of Early Dark Energy solutions to the Hubble tension: A review of models, hints and constraints circa 2023 (2023, background): “[82, 83] proposes two cosmological scalar fields, the NEDE field ψ of mass M and the ‘trigger’ (sub-dominant) field φ of mass m, whose potential is written as (with canonically normalized kinetic terms):”
- The Hubble tension in light of the Full-Shape analysis of Large-Scale Structure data (2020, methodology): “In this sense, there may be an artificially large volume in parameter space associated to vanishing fEDE or fRnR that might enhance the statistical weight of the ΛCDM models when using some sampling algorithms such as Metropolis-Hastings, as pointed out, for example, in [63, 91, 92].”