SM&FT 2019 - The XVIII Workshop on Statistical Mechanics and nonpertubative Field Theory

Session

Session 3

11 Dec 2019, 14:15

Salone degli Affreschi, Palazzo Ateneo Università "Aldo Moro" Bari

Conveners

Session 3

• Sebastiano Stramaglia (BA)

42. Social anatomy of a financial bubble

Rosario Nunzio Mantegna (University of Palermo)

11/12/2019, 14:15

This work is about the demographic trends and social dynamics observed at the onset and during the evolution of a financial bubble. Our characterization aims to detect demographic trends in the flux of new investors buying the Nokia asset, i.e. the most representative dotcom stock of the Nordic Stock Exchange during the dotcom bubble. The data for our empirical investigation are taken from two...

51. Grand canonical ensemble of heterogeneous weighted networks

Andrea Gabrielli (Dipartimento di Ingegneria, Università degli Studi Roma Tre)

11/12/2019, 14:45

In the last years the formulation of statistical ensembles of binary and weighted random graphs satisfying some arbitrary constraints has attracted much attention in phys/math communities for its two-fold potential application [1, 2]: (i) The construction of appropriate null models for the statistical validation of high order properties of real networks; (ii) the reconstruction of the...

32. Chemical properties emerging from structural disorder in biology

Giovanni La Penna (R)

11/12/2019, 15:15

During neurodegeneration, the first stage of neuronal death, abnormal concentrations of structurally disordered proteins and ions, like zinc and copper, are observed in the synapse. Some proteins, like amyloid-beta (Abeta) peptides, form, in the Alzheimer's disease, oligomers and aggregates that become markers of the irreversible pathway towards death. When such conditions occur in the...

20. Multi-scale molecular dynamics & first-principle calculations of X-ray absorption spectra: the coordination of metal cations with water e biomolecules.

Francesco Stellato (ROMA2)

11/12/2019, 15:30

The progress in high performance computing we are witnessing today offers the possibility of accurate ab initio calculations of structures of systems in realistic physico-chemical conditions. In this talk we present a parameter-free strategy aimed at performing a first-principle computation of the low energy part of the X-ray Absorption Spectroscopy (XAS) spectrum, based on density functional...

12. Heterogeneity, visco-elasticity and the universality class of earthquake occurrence

Eugenio Lippiello

11/12/2019, 15:45

The organization in time, space and energy of earthquakes exhibits scaling laws with exponents $\alpha,\beta,\gamma$ and $p$
which are universal, i.e. they are independent of time and of the geographic region.
A possible explanation of this critical-like behavior is provided by the possibility to describe the evolution of a seismic fault
under friction within the general context of the...

22. Condensate in quasi-two-dimensional turbulence

Stefano Musacchio (Istituto Nazionale di Fisica Nucleare)

11/12/2019, 16:00

We investigate the process of formation of large-scale structures in a turbulent flow confined in a thin layer. By means of direct numerical simulations of the Navier-Stokes equations, forced at an intermediate scale, we obtain a split of the energy cascade in which one fraction of the input goes to small scales generating the three-dimensional direct cascade. The remaining energy flows to...