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Alessandro Amici

Alessandro Amici
B-Open

PhD Physics

About

16
Publications
2,015
Reads
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294
Citations
Citations since 2017
4 Research Items
171 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080

Publications

Publications (16)
Article
Full-text available
We present a theory of superconductivity in the presence of a general magnetic structure in a form suitable for the description of complex magnetic phases encountered in borocarbides. The theory, complemented with some details of the band structure and with the magnetic phase diagram, may explain the nearly reentrant behavior and the anisotropy of...
Article
Full-text available
To better understand and manage climate risks in climate-sensitive sectors such as agriculture, it is essential to have access to consistent and reliable data and information products. Tailoring these products to the needs of the users they want to serve facilitate informed decision-making and downstream applications. This requires an in-depth unde...
Preprint
Full-text available
The WFDE5 dataset has been generated using the WATCH Forcing Data (WFD) methodology applied to surface meteorological variables from the ERA5 reanalysis. The WFDEI dataset had previously been generated by applying the WFD methodology to ERA-Interim. The WFDE5 is provided at 0.5∘ spatial resolution but has higher temporal resolution (hourly) compare...
Article
Full-text available
In this talk we discuss some of the main theoretical problems in the understanding of the statistical properties of gravity. By means of N-body simulations we approach the problem of understanding the r\^ole of gravity in the clustering of a finite set of N-interacting particles which samples a portion of an infinite system. Through the use of the...
Article
Full-text available
Cloud computing has completely transformed computing infrastructure over the past decade, opening exciting new possibilities for data distribution and analytics. As earth-observation data continue to grow in volume and complexity, many data providers are considering how best to take advantage of cloud computing. This report assesses how the Coperni...
Article
The WFDE5 dataset has been generated using the WATCH Forcing Data (WFD) methodology applied to surface meteorological variables from the ERA5 reanalysis. The WFDEI dataset had previously been generated by applying the WFD methodology to ERA-Interim. The WFDE5 is provided at 0.5° spatial resolution but has higher temporal resolution (hourly) compare...
Article
Telaer is an advanced airborne remote sensing system for environmental monitoring and management. It is constituted by two aircrafts equipped with optical and microwave sensors. During the recent environmental crisis caused by the Prestige shipwreck, the operation of the Telaer system provided with an X-band SAR system mounted on a Learjet 35A, has...
Article
Self-gravitating systems have acquired growing interest in statistical mechanics, due to the peculiarities of the 1/r potential. Indeed, the usual approach of statistical mechanics cannot be applied to a system of many point particles interacting with the Newtonian potential, because of (i) the long-range nature of the 1/r potential and of (ii) the...
Article
Full-text available
We study gravitational clustering of mass points in three dimensions with random initial positions and periodic boundary conditions (no expansion) by numerical simulations. Correlation properties are well-defined in the system and a sort of thermodynamic limit can be defined for the transient regime of clustering. Structure formation proceeds along...
Article
The interplay between superconductivity and magnetic order in HoNi2B2C has been described as the effect of the molecular exchange field on the properties of the conduction electrons. The effect of superconductivity on magnetic properties has been considered to be negligible. We analyze the reasons for this approximation.
Article
The interaction between magnetism and superconductivity is investigated within the theory of superconductivity for electrons in magnetic Bloch-states. We show that the presence of an incommensurate helical magnetic structure suppresses the superconducting order parameter only slightly, via the reduction of the effective attraction. Consequences for...
Article
Full-text available
An important problem in the analysis of experimental data showing fractal properties, is that such samples are composed by a set of points limited by an upper and a lower cut off. We study how finite size effect due to the discreteness of the sets may influence self similar properties even far from these cut-offs. Estimations of these effects are p...
Article
Borocarbide compounds with the formula RNi2B2C show interesting superconducting and magnetic properties and the coexistence of the two phenomena. BCS theory is extended to systems with underlying commensurate magnetic order. In the case of helical phases the technique may be extended to any Q-vector and there exists a well defined limit for incomme...
Article
Full-text available
We present a microscopic theory for the low-temperature metamagnetic phase diagram of HoNi2B2C that agrees well with experiments. For the same model we determined the zero-field ground state as a function of temperature and found the c-axis commensurate-to-incommensurate transition in the expected temperature range. The complex behavior of the syst...
Article
We analyze subsamples of Abell and ACO cluster catalogs, in order to study the spatial properties of the large-scale matter distribution. The subsamples analyzed are estimated to be nearly complete and are the standard ones used in the correlation analysis by various authors. The statistical analysis of cluster correlations is performed without any...
Article
Full-text available
We report the correlation analysis of various redshift surveys which shows that the available data are consistent with each other and manifest fractal correlations (with dimension D 2) up to the present observational limits ( ≈ 150 h−1Mpc) without any tendency towards homogenization. This result points to a new interpretation of the number counts t...

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