Quantum Critical Scaling under Periodic Driving - Kölner UniversitätsPublikationsServer

Lorenzo, Salvatore ORCID: 0000-0002-0827-5549, Marino, Jamir, Plastina, Francesco, Palma, G. Massimo and Apollaro, Tony J. G. (2017). Quantum Critical Scaling under Periodic Driving. Sci Rep, 7. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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DOI:10.1038/s41598-017-06025-1

Abstract

Universality is key to the theory of phase transitions, stating that the equilibrium properties of observables near a phase transition can be classified according to few critical exponents. These exponents rule an universal scaling behaviour that witnesses the irrelevance of the model's microscopic details at criticality. Here we discuss the persistence of such a scaling in a one-dimensional quantum Ising model under sinusoidal modulation in time of its transverse magnetic field. We show that scaling of various quantities (concurrence, entanglement entropy, magnetic and fidelity susceptibility) endures up to a stroboscopic time tbd, proportional to the size of the system. This behaviour is explained by noticing that the low-energy modes, responsible for the scaling properties, are resilient to the absorption of energy. Our results suggest that relevant features of the universality do hold also when the system is brought out-of-equilibrium by a periodic driving.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Lorenzo, Salvatore	UNSPECIFIED	orcid.org/0000-0002-0827-5549	UNSPECIFIED
Marino, Jamir	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Plastina, Francesco	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Palma, G. Massimo	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Apollaro, Tony J. G.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED