263 citations · 2.6k across the 52 of their papers we have counts for
53 papers
Bounds from D/H on baryogenesis models
Aleksandr Azatov, Bruno Missoni
We review the constraints on baryon inhomogeneities derived from measurements of the deuterium abundance, , and apply them to a range of baryogenesis models. In particular, we…
Bubble Nucleation from Boson Star Collapse
Aleksandr Azatov, Takeshi Kobayashi, Nicklas Ramberg
We present a new classical mechanism for nucleation of bubbles of true vacuum. The mechanism arises when dense boson stars form in the false vacuum. As the boson stars collapse due…
Towards a Post-Inflationary Composite Axion Model
Aleksandr Azatov, Mohamed Mahdi Khalil, Motoo Suzuki
Composite axions offer a scenario where the axion emerges as a pion-like state, avoiding fine-tuning of elementary scalars and ameliorating the axion quality problem. Despite these…
Q-ball perturbations with more details: linear analysis vs lattice
Aleksandr Azatov, Quoc Trung Ho, Mohamed Mahdi Khalil
We analyze in detail the interactions between non-topological soliton (Q-ball) and its perturbations. We extend the previous literature by carefully identifying the domain of appli…
Populating secluded dark sector with ultra-relativistic bubbles
Aleksandr Azatov, Xander Nagels, Miguel Vanvlasselaer +1
We study Dark Matter production during first order phase transitions from bubble-plasma collisions. We focus on scenarios where the Dark Matter sector is secluded and its interacti…
NLO friction in symmetry restoring phase transitions
Aleksandr Azatov, Giulio Barni, Rudin Petrossian-Byrne
Interactions between bubbles/domain walls and the surrounding medium are a topic of active research, particularly as they apply to friction effects on accelerated expansion during…