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

Session

Session 7

20 Dec 2022, 15:00

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

Conveners

Session 7

• Michele Pepe (Istituto Nazionale di Fisica Nucleare)

127. The Exodus to GPU. The case of scientific analysis for the Euclid mission.

Alessandro Renzi (Istituto Nazionale di Fisica Nucleare)

20/12/2022, 15:00

All the main HPC facilities in the world rely on GPUs for their new computational systems. CINECA’s Leonardo powerful computing capabilities are rooted on GPU performances. Missions like Euclid that make a lot of use of computing power to perform scientific analysis with their data will now need to produce and optimize codes that adapt to the GPU in a short timescale.
In this presentation I...

66. Understanding the non-Gaussianities in the Hubble-Lemaitre diagram

Giuseppe Fanizza (IA - Lisbon)

20/12/2022, 15:25

I will present the theoretical framework to understand the non-Gaussianities in the Hubble-Lemaître diagram, namely the distance-redshift relation, emerging from relativistic cosmological simulations, such as gevolution. With these analytic results, I will discuss which kind of non-Gaussianities can be addressed to intrinsic non-linear effects, such as post-Born corrections and higher-order...

72. A new first-order formulation of the Einstein equations exploiting analogies with electrodynamics

Federico Maria Guercilena (Istituto Nazionale di Fisica Nucleare)

20/12/2022, 15:45

The Einstein and Maxwell equations are both systems of hyperbolic equations which need to satisfy a set of elliptic constraints throughout evolution. However, while EM and MHD have benefited from a large number of evolution schemes that are able to enforce these constraints and are easily applicable to curvilinear coordinates, unstructured meshes, or N-body simulations, many of these...

105. Lindblad master equation approach to the topological phase transition in the disordered Su-Schrieffer-Heeger model

Andrea Nava (Istituto Nazionale di Fisica Nucleare)

20/12/2022, 16:05

We use the Lindblad equation method to investigate the onset of a mobility edge and the topological phase transition in the disordered Su-Schrieffer-Heeger chain connected to two external baths in the large bias limit. From the scaling properties of the nonequilibrium stationary current flowing across the system, we recover the localization/delocalization in the disordered chain.
To probe...

90. Stochastic normalizing flows as non-equilibrium transformations

Dr Alessandro Nada (Università di Torino)

20/12/2022, 16:25

Normalizing Flows are a class of deep generative models recently proposed as a promising alternative to conventional Markov Chain Monte Carlo simulations to sample lattice field theory configurations, since they provide a unique approach to potentially avoid the large autocorrelations that characterize Monte Carlo simulations close to the continuum limit. In this talk we explore the novel...

85. Entanglement entropy from non-equilibrium lattice simulations

Andrea Bulgarelli (Istituto Nazionale di Fisica Nucleare)

20/12/2022, 16:45

The entanglement entropy is a quantity encoding important features of strongly interacting quantum many-body systems and gauge theories, but its analytical study is still limited to systems with high level of symmetry. This motivates the search for efficient techniques to investigate this quantity numerically, by means of Monte Carlo calculations on the lattice.
In this talk, we present a...