Universality is key to the theory of phase transition 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 τbd, 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.Comment: 11 pages, 7 figure