A5002811150- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Galaxies: Formation, Evolution, Phenomena
- Nuclear physics research studies
- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- Astronomical and nuclear sciences
- Relativity and Gravitational Theory
- Astronomy and Astrophysical Research
- Nuclear reactor physics and engineering
- Historical and Architectural Studies
- Nonlinear Waves and Solitons
- Radio Astronomy Observations and Technology
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Turbulent Flows
- Numerical methods for differential equations
- Geophysics and Gravity Measurements
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2023-2025
University of Padua
2020-2024
The primordial power spectrum of curvature perturbations has been well measured on large scales but remains fairly unconstrained at smaller scales, where significant deviations from $\mathrm{\ensuremath{\Lambda}}$ cold dark matter ($\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$) may occur. Measurements 21-cm intensity mapping in the ages promise to access very small that have yet be probed, extending beyond reach cosmic microwave background and galaxy surveys. In this paper, we investigate how...
Abstract Measurements of 21 cm intensity mapping (IM) during the dark ages can potentially provide us with an unprecedented window on high redshifts and small scales. One main advantages this bring involves possibility to probe nature matter. Tests matter models large-scale structure Universe are limited by non-linearities astrophysical effects, which not present for IM measurements ages. In paper we focus constraining model in is comprised, totally or part, ultra-light axion-like particles...
It is natural to wonder whether there may be observational relics of new fundamental fields, beyond the inflaton, in large scale structure. Here we discuss phenomenology a model which compensated isocurvature perturbations (CIPs) arise through action primordial vector field that displaces dark matter relative baryons. The can tested best by kinematic-Sunyaev-Zeldovich tomography, involves cross-correlation cosmic microwave background and galaxy surveys, with next-generation observatories....
Hydrogen 21-cm Line Intensity Mapping offers the unique opportunity to access Dark Ages and trace formation evolution of large scale structure Universe prior star galaxy formation. In this work we investigate potential future Earth- Moon-based surveys constrain growth structures during currently unexplored redshift range $30 < z 200$. On one hand show how foregrounds limit capabilities Earth-based instruments in achieving precision below $10\%$ level. other hand, observations from far side...
This study examines the performance of antisymmetrized molecular dynamics (AMD) transport model in simulating low-energy nuclear reactions 18 O + 12 C at 16.7 MeV/nucleon. Experimental data, collected using GARFIELD+RCo detector Laboratori Nazionali di Legnaro, were compared with AMD coupled GEMINI++ decay code. The results show that accurately predicts behaviour fragments Z ≥ 10, although discrepancies observed production 4 < 10.
Many different techniques to analyze galaxy clustering data and obtain cosmological constraints have been proposed, tested used. Given the large amount of that will be available soon, it is worth investigating new observables ways extract information from such datasets. In this paper, we focus on antisymmetric correlations, arise in cross-correlation populations when small-scale power spectrum modulated by a long-wavelength field. $\Lambda$CDM happens because nonlinear sources trace...
The charged particles produced in the $^{18}\mathrm{O}+^{12}\mathrm{C}$ reaction at 16.7 MeV/nucleon have been detected using GARFIELD+RCo apparatus Laboratori Nazionali di Legnaro and compared with transport code antisymmetrized molecular dynamics (AMD) followed by gemini$++$ as afterburner. To our knowledge, it is first time that this model applied to a nuclear between light nuclei so relatively low bombarding energy. general agreement experimental data very good for fragments...
Abstract Primordial black holes still represent a viable candidate for significant fraction, if not the totality, of dark matter. If these compact objects have masses order tens solar masses, their coalescence can be observed by current and future ground-based gravitational wave detectors. Therefore, finding new signatures associated with this matter either lead to detection or help constraining abundance. In work we consider phenomenology primordial in dense environments, particular...
Abstract We show that solutions of the self-similar gravitational collapse in Einstein-axion–dilaton system exist higher-dimensional spacetimes. These are invariant under spacetime dilation combined with internal SL(2, $$\mathbb {R}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>R</mml:mi> </mml:math> ) transformations. rely on recent setup Antonelli and Hatefi (JHEP 03:074, arXiv:1912.00078 [hep-th], 2020) use it for three different conjugacy classes (elliptic,...
Primordial black holes still represent a viable candidate for significant fraction, if not the totality, of dark matter. If these compact objects have masses order tens solar masses, their coalescence can be observed by current and future ground-based gravitational wave detectors. Therefore, finding new signatures associated with this matter either lead to detection or help constraining abundance. In work we consider phenomenology primordial in dense environments, particular globular...
Many different techniques to analyze galaxy clustering data and obtain cosmological constraints have been proposed, tested, used. Given the large amount of that will be available soon, it is worth investigating new observables ways extract information from such datasets. In this paper, we focus on antisymmetric correlations arise in cross-correlation populations when small-scale power spectrum modulated by a long-wavelength field. $\mathrm{\ensuremath{\Lambda}}$ cold dark matter happens...
Measurements of 21cm intensity mapping (IM) during the dark ages can potentially provide us with an unprecedented window on high redshifts and small scales. One main advantages this bring involves possibility to probe nature matter. Tests matter models large-scale structure Universe are limited by non-linearities astrophysical effects, which not present for IM measurements ages. In paper we focus constraining model in is comprised, totally or part, ultra-light axion-like particles around...
It is natural to wonder whether there may be observational relics of new fundamental fields, beyond the inflaton, in large scale structure. Here we discuss phenomenology a model which compensated isocurvature perturbations (CIPs) arise through action primordial vector field that displaces dark matter relative baryons. The can tested best by kinematic-Sunyaev-Zeldovich tomography, involves cross-correlation cosmic microwave background and galaxy surveys, with next-generation observatories....