3 papers
astro-ph.CO2025
Quintessence and phantoms in light of DESI 2025
Ioannis D. Gialamas, Gert Hütsi, Martti Raidal +3
We analyse DESI BAO, CMB, and supernova data to explore the physical origin of the DESI indication for dynamical dark energy. Beyond the standard CPL parametrization, we explore tr…
astro-ph.CO2025
Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
Ioannis D. Gialamas, Gert Hütsi, Kristjan Kannike +4
We perform fits to DESI, CMB and supernova data to understand the physical origin of the DESI hint for dynamical dark energy. We find that the linear parametrization of the equatio…
hep-ph2024
Thermalization effects on the dynamics of growing vacuum bubbles
Tomasz Krajewski, Marek Lewicki, Martin Vasar +3
We study the evolution of growing vacuum bubbles. The bubble walls interact with the surrounding fluid and may, consequently, reach a terminal velocity. If the mean free path of th…