Dynamical Critical Scaling of Long-Range Interacting Quantum Magnets.

@article{Defenu2018DynamicalCS,
  title={Dynamical Critical Scaling of Long-Range Interacting Quantum Magnets.},
  author={Nicol{\`o} Defenu and Tilman Enss and Michael Kastner and Giovanna Morigi},
  journal={Physical review letters},
  year={2018},
  volume={121 24},
  pages={
          240403
        }
}
Slow quenches of the magnetic field across the paramagnetic-ferromagnetic phase transition of spin systems produce heat. In systems with short-range interactions the heat exhibits universal power-law scaling as a function of the quench rate, known as Kibble-Zurek scaling. In this work we analyze slow quenches of the magnetic field in the Lipkin-Meshkov-Glick (LMG) model, which describes fully connected quantum spins. We analytically determine the quantum contribution to the residual heat as a… 
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