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Talk by Nicolò Defenu: "Quantum criticality and out-of-equilibrium scaling long-range systems and beyond"

ETH Zürich

10.06.2022 at 09:00 

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} at $\alpha<d$ showing how the equilibrium scaling depends of the power-law scaling $\alpha$ [1]. 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 [2]. Finally, I will deal with the seemingly unconnected case of 2-components fermi gases confined in 2D traps. The connection between this topic and the previous studies of long-range interactions will be outlined [3]."

[1] A. P. Millán, G. Gori, F. Battiston, T., and ND, Phys. Rev. Research 3, 023015 (2021).

[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).

Room A 450 (SHARP)