105 citations · 186 across the 5 of their papers we have counts for
5 papers
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…
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…
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…
Dynamics of false vacuum bubbles with trapped particles
Marek Lewicki, Kristjan Müürsepp, Joosep Pata +3
We study the impact of the ambient fluid on the evolution of collapsing false vacuum bubbles by simulating the dynamics of a coupled bubble-particle system. A significant increase…
On the number of -folds in the Jordan and Einstein frames
Antonio Racioppi, Martin Vasar
We investigate how inflationary predictions are affected by the difference in the number of -folds between the Jordan and Einstein frames. We study several test models in relati…