activity
19972025
most citedDynamical dark energy in light of the latest observations

497 citations · 8.4k across the 112 of their papers we have counts for

collaborators

112 papers

astro-ph.CO2025★ 9 cited

Sound-Horizon-Agnostic Inference of the Hubble Constant and Neutrino Mass from BAO, CMB Lensing, and Galaxy Weak Lensing and Clustering

Helena García Escudero, Seyed Hamidreza Mirpoorian, Levon Pogosian

We present a sound-horizon-agnostic determination of the Hubble constant, , by combining DESI DR2 baryon acoustic oscillation (BAO) data with the latest cosmic microwave backg…

hep-ph2025

Cosmic strings in the complex symmetron model

Ali Nezhadsafavi, Levon Pogosian

We study cosmic strings in the complex symmetron model, a scalar-tensor theory with a spontaneously broken local symmetry in low matter density regions. Using numerical simu…

astro-ph.CO2025★ 23 cited

Is Dynamical Dark Energy Necessary? DESI BAO and Modified Recombination

Seyed Hamidreza Mirpoorian, Karsten Jedamzik, Levon Pogosian

Recent measurements of baryon acoustic oscillations (BAO) by the Dark Energy Spectroscopic Instrument (DESI) exhibit a mild-to-moderate tension with cosmic microwave background (CM…

astro-ph.CO2025★ 62 cited

Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements

Gan Gu, Xiaoma Wang, Yuting Wang +57

Understanding whether cosmic acceleration arises from a cosmological constant or a dynamical component is a central goal of cosmology, and the Dark Energy Spectroscopic Instrument…

astro-ph.CO2025★ 299 cited

The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics

Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533

The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…

astro-ph.CO2025★ 14 cited

Hints of Primordial Magnetic Fields at Recombination and Implications for the Hubble Tension

Karsten Jedamzik, Levon Pogosian, Tom Abel

Primordial Magnetic Fields (PMFs), long studied as relics of the early Universe, accelerate recombination and have been proposed as a way to relieve the Hubble tension. However, pr…