13 citations · 39 across the 7 of their papers we have counts for
7 papers
The Interplay of Data Structure and Imbalance in the Learning Dynamics of Diffusion Models
Flavio Nicoletti, Chenxiao Ma, Enrico Ventura +2
Real-world datasets are inherently heterogeneous, yet how per-class structural differences and sampling imbalance shape the training dynamics of diffusion models-and potentially ex…
Soft modes in vector spin glass models on sparse random graphs
Silvio Franz, Cosimo Lupo, Flavio Nicoletti +2
We study numerically the Hessian of low-lying minima of vector spin glass models defined on random regular graphs. We consider the two-component (XY) and three-component (Heisenber…
The most uniform distribution of points on the sphere
Luca Maria Del Bono, Flavio Nicoletti, Federico Ricci-Tersenghi
How to distribute a set of points uniformly on a spherical surface is a very old problem that still lacks a definite answer. In this work, we introduce a physical measure of unifor…
Analytical solution to Heisenberg spin glass models on sparse random graphs and their de Almeida-Thouless line
Luca Maria Del Bono, Flavio Nicoletti, Federico Ricci-Tersenghi
Results regarding spin glass models are, to this day, mainly confined to models with Ising spins. Spin glass models with continuous spins exhibit interesting new physical behaviors…
Low energy excitations of vector spin glasses
Flavio Nicoletti
The work of this thesis concerns the problem of linear low energy excitations of vector spin glass models. An analytical and numerical study is carried out, considering a fully con…
Low energy excitations of mean-field glasses
Silvio Franz, Flavio Nicoletti, Federico Ricci-Tersenghi
We study the linear excitations around typical energy minima of a mean-field disordered model with continuous degrees of freedom undergoing a Random First Order Transition (RFOT).…
Delocalization transition in low energy excitation modes of vector spin glasses
Silvio Franz, Flavio Nicoletti, Giorgio Parisi +1
We study the energy minima of the fully-connected -components vector spin glass model at zero temperature in an external magnetic field for . The model has a zero temper…