CREF Talk – Guest

April 4th 2023 -3 PM- Aula Fermi

Nicolò Defenu ETH Zurich

Long-range interacting quantum systems

The seminar is meant to present a bird’s eye view on the field of long-range interacting quantum systems. The talk will start with a brief overview of critical phenomena in systems with power-law interactions 1/r^{\alpha}, showing how the equilibrium scaling depends on the power-law scaling $\alpha$. Then, I will describe the peculiar out-of-equilibrium scaling dynamics observed in “strong” long-range systems with \alpha<d, both for sudden and slow quenches.

Finally, I will show how the study of long-range interacting systems is connected to the case of non-homogeneous disordered structures.

[1] ND, T. Enss, M. Kastner, and G. Morigi Phys. Rev. Lett. 121, 240403 (2018).

[2] ND,  Proc. Nat. Acad. Sci. 118, e2101785118 (2021).

[3] P. A. Murthy*, ND*, L. Bayha, M. Holten, P. M. Preiss, T. Enss, S. Jochim, Science 365, 268-272 (2019).