Is there really a Hubble tension?
Sign Up to like & getrecommendations! Published in 2021 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac0f39
Abstract: The heliocentric redshifts (z hel) reported for 150 type Ia supernovae in the Pantheon compilation are significantly discrepant from their corresponding values in the JLA compilation. Both catalogues include corrections to the redshifts and magnitudes… read more here.
Keywords: hubble tension; mpc; really hubble; supernovae ... See more keywords
Oscillating scalar fields and the Hubble tension: A resolution with novel signatures
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.063523
Abstract: We present a detailed investigation of a subdominant oscillating scalar field [“early dark energy” (EDE)] in the context of resolving the Hubble tension. Consistent with earlier work, but without relying on fluid approximations, we find… read more here.
Keywords: field; oscillating scalar; scalar fields; scalar field ... See more keywords
Vacuum arbitrariness and the Hubble tension
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.083523
Abstract: We show that the energy density of the superhorizon modes released in a non-Bunch-Davies vacuum can be arbitrarily large during inflation and it decreases like ln(a)/a^4 in the subsequent radiation dominated era. This may constitute… read more here.
Keywords: vacuum arbitrariness; arbitrariness hubble; tension; hubble tension ... See more keywords
Can conformally coupled modified gravity solve the Hubble tension?
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.023530
Abstract: The discrepancy between early-Universe inferences and direct measurements of the Hubble constant, known as the Hubble tension, recently became a pressing subject in high precision cosmology. As a result, a large variety of theoretical models… read more here.
Keywords: coupled modified; model; ccmg model; tension ... See more keywords
Early Dark Energy can Resolve the Hubble Tension.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.221301
Abstract: Early dark energy (EDE) that behaves like a cosmological constant at early times (redshifts z≳3000) and then dilutes away like radiation or faster at later times can solve the Hubble tension. In these models, the… read more here.
Keywords: dark energy; energy resolve; hubble tension; early dark ... See more keywords