A5062754491- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Pulsars and Gravitational Waves Research
- Sports Performance and Training
- Exercise and Physiological Responses
- Thermoregulation and physiological responses
- Particle physics theoretical and experimental studies
Université de Montpellier
2023-2024
Centre National de la Recherche Scientifique
2023-2024
Laboratoire Univers et Particules de Montpellier
2024
Sapienza University of Rome
2023
University of Padua
2021
The authors develop a formalism for computing the abundance of primordial black holes (PBH) in presence local non-Gaussianities curvature perturbation field. They show that polynomial expansions will not suffice certain limits and provide numerical methods to address this issue. demonstrate how their technique affects both total PBH abundances gravitational wave expectations.
We revise primordial black holes (PBHs) production in the axion-curvaton model, light of recent developments computation their abundance accounting for non-gaussianities (NGs) curvature perturbation up to all orders. find that NGs intrinsically generated such scenarios have a relevant impact on phenomenology associated PBHs and, particular, relation between and signal second-order gravitational waves. show this model could explain both totality dark matter asteroid mass range tentative...
A bstract In models with spontaneous symmetry breaking by scalar fields in large group representations, we observe that some of the masses can be loop-suppressed respect to naive expectation from selection rules. We present minimal — SU(2) five-plet and SU(3) ten-plet such accidentally light scalars, featuring compact tree-level flat directions lifted radiative corrections. sketch potential applications, stable relics slow roll cosmology, hierarchy fine-tuning problems particle physics.
We construct a hybrid-inflation model where the inflaton potential is generated radiatively, as gauge symmetries guarantee it to be accidentally flat at tree level. The can regarded small-field version of natural inflation, with inflation ending when mass second scalar, waterfall field, turns tachyonic. This provides minimal, robust realization hybrid which predicts specific correlations among cosmic microwave background observables. Tachyonic preheating leads production gravitational waves...
The marathon is the most classic Olympic running event. In several cities worldwide it has become very popular with participation increasing during last 20 years, particularly by Master Athletes. There are evidences that long-distance could provide considerable health benefits for older runners, specifically risk reduction of cardiovascular diseases, cancer, diabetes, depression, and falls. Several studies have focused on distribution participants their performance famous marathons such as...
We revise primordial black holes (PBHs) production in the axion-curvaton model, light of recent developments computation their abundance accounting for non-gaussianities (NGs) curvature perturbation up to all orders. find that NGs intrinsically generated such scenarios have a relevant impact on phenomenology associated PBHs and, particular, relation between and signal second-order gravitational waves. show this model could explain both totality dark matter asteroid mass range tentative...
We develop an exact formalism for the computation of abundance primordial black holes (PBHs) in presence local non-gaussianity (NG) curvature perturbation field. For first time, we include NG going beyond widely used quadratic and cubic approximations, consider a completely generic functional form. Adopting threshold statistics compaction function, address both narrow broad power spectra. While our formulas are generic, discuss explicit examples phenomenological relevance considering physics...