2 papers
quant-ph2017
Geometric phase of quenched spin models
Giuseppe Zonzo, Antonio Capolupo, Salvatore Marco Giampaolo
We consider a spin belonging to a many body system in a magnetically ordered phase, which initial state is a symmetry broken ground state. We assume that in this system a sudden qu…
cond-mat.stat-mech2016
Classical nature of ordered quantum phases and origin of spontaneous symmetry breaking
M. Cianciaruso, S. M. Giampaolo, L. Ferro +4
We analyse the nature of spontaneous symmetry breaking in complex quantum systems by investigating the long-standing conjecture that the maximally symmetry-breaking quantum ground…