242 citations · 1.2k across the 14 of their papers we have counts for
4 papers · 1 filter
A phantom transition at as a resolution of the Hubble tension
George Alestas, Lavrentios Kazantzidis, Leandros Perivolaropoulos
A rapid phantom transition of the dark energy equation of state parameter at a transition redshift of the form with can lead to a higher…
Hints for possible low redshift oscillation around the best fit CDM model in the expansion history of the Universe
L. Kazantzidis, H. Koo, S. Nesseris +2
We search for possible deviations from the expectations of the concordance CDM model in the expansion history of the Universe by analysing the Pantheon Type Ia Supernovae (SnIa)…
Tension, Phantom Dark Energy and Cosmological Parameter Degeneracies
G. Alestas, L. Kazantzidis, L. Perivolaropoulos
Phantom dark energy can produce amplified cosmic acceleration at late times, thus increasing the value of favored by CMB data and releasing the tension with local measurement…
Hints of a Local Matter Underdensity or Modified Gravity in the Low Pantheon data
L. Kazantzidis, L. Perivolaropoulos
A redshift tomography of the Pantheon type Ia supernovae (SnIa) data focusing on the best fit value of the absolute magnitude and/or Hubble constant in the context of …