Turin Lattice Meeting 2023

Session

Out-of-equilibrium simulations, Quantum Computing and Statistical Mechanics

21 Dec 2023, 14:15

Aula C (Dipartimento di Fisica)

13. Thermalisation and Quantum many body scars in Lattice Gauge Theories

paolo stornati (ICFO)

21/12/2023, 14:15

Talk

In this talk, I will overview recent advances in the study of the Eigenstate Thermalisation Hypothesis (ETH) in the contest of quantum simulation of Lattice gauge theories. Motivated by recent experiment in col atoms quantum simulators, I will present the concept of quantum many body scars and elucidate the structure and properties of a class of anomalous high-energy states of matter-free U(1)...

4. Mass of quantum topological excitations and order parameter finite size dependence

Marianna Sorba (Scuola Internazionale Superiore di Studi Avanzati (SISSA))

21/12/2023, 14:45

Talk

We consider the spontaneously broken regime of the $O(n)$ vector model in $d=n+1$ space-time dimensions, with boundary conditions enforcing the presence of a topological defect line. Comparing theory and finite size dependence of one-point functions observed in recent numerical simulations [1,2] we argue that the mass of the underlying topological quantum particle becomes infinite for $d\ge...

3. Relaxation in Integrable Field Theories

Emanuele Di Salvo (Utrecht University)

21/12/2023, 15:15

Talk

Out of equilibrium dynamics of integrable systems have been intensively studied in the past 20 years. However, a full characterisation of time evolution of an integrable field theory after a quantum quench is still missing. We investigate processes occurring during relaxation towards a steady state and describe them in terms of analytical properties of matrix elements of operators in the...

12. On temporal entropies

Luca Tagliacozzo (IFF-CSIC)

22/12/2023, 09:30

Talk

I will review the concept of temporal entropies and their relation to CFTs and the computational cost of performing the simulation of out-of-equilibrium simulations.

6. Entanglement entropy in the gauge Ising model: a Monte Carlo study

Andrea Bulgarelli (Istituto Nazionale di Fisica Nucleare)

22/12/2023, 10:00

Talk

The study of entanglement in quantum field theories provides insight into universal properties which are typically challenging to extract by means of more local observables. In the context of strongly coupled gauge theories, entanglement is expected to play a role in understanding many defining phenomena, among which confinement. However, calculations of entanglement-related quantities in...