SM&FT 2022 - The XIX Workshop on Statistical Mechanics and nonpertubative Field Theory

Session

Session 5

20 Dec 2022, 09:00

aula A ("Beppe Nardulli") (Dipartimento di Fisica - Università di Bari "Aldo Moro")

Conveners

Session 5

• Michele Caselle (TO)

73. Statistically validated hypergraphs

Prof. Rosario Nunzio Mantegna (Univ. Palermo)

20/12/2022, 09:00

In many real-world systems, successfully represented as networks, interactions are not limited to dyads, but often involve three or more nodes at a time. Under this condition, a better description of the system is given by hypergraphs, where hyperlinks encode higher-order interactions among a group of nodes. We discuss an analytic and computational approach to filter hypergraphs by identifying...

102. Identifying informative distance measures in high-dimensional feature spaces

Alessandro Laio

20/12/2022, 09:30

Real-world data in physical chemistry, material science and beyond typically contain a large number of features that are often heterogeneous in nature, relevance, and also units of measure.
When assessing the similarity between data points, one can build various distance measures using subsets of these features.
Finding a small set of features that still retains sufficient information about...

68. Using machine learning in geophysical data assimilation (some of the issues and some ideas)

Alberto Carrassi (University of Bologna)

20/12/2022, 10:00

In recent years, data assimilation, and more generally the climate science modelling enterprise have been influenced by the rapid advent of artificial intelligence, in particular machine learning (ML), opening the path to various form of ML-based methodology.
In this talk we will schematically show how ML can be included in the prediction and DA workflow in three different ways. First, in a...

87. Computational Challenges in Lattice QCD

Francesco Sanfilippo (Istituto Nazionale di Fisica Nucleare)

20/12/2022, 10:30

In this talk I will review recent progress and open challenges of nonperturbative calculations on the lattice. I will discuss novel mathematical approaches, improved numerical algorithms, and unresolved issues covering several aspects of the strong interaction phenomenology.

89. Turbulent Inverse cascade in quantum fluids of light

Dr Alessandra Sabina Lanotte (CNR NANOTEC and INFN)

We study the turbulent dynamics of a 2D quantum fluid of exciton-polaritons, hybrid light-matter quasiparticles, by measuring the kinetic energy spectrum and the onset of vortex clustering. We demonstrate that the formation of clusters of quantum vortices is triggered by the increase of the incompressible kinetic energy per vortex, showing the tendency of the vortex-gas towards highly excited...