16 citations · 30 across the 7 of their papers we have counts for
7 papers
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…
n-cluster models in a transverse magnetic field
G. Zonzo, S. M. Giampaolo
In this paper we analize a family of one dimensional fully analytically solvable models, named the n-cluster models in a transverse magnetic field, in which a many-body cluster int…
Quantum coherence of Gaussian states
Daniela Buono, Gaetano Nocerino, Giuseppe Petrillo +3
We introduce a geometric quantification of quantum coherence in single-mode Gaussian states and we investigate the behavior of distance measures as functions of different physical…
Quench of symmetry broken ground states
Salvatore Marco Giampaolo, Giuseppe Zonzo
We analyze the problem of how different ground states associated to the same set of the Hamiltonian parameters evolve after a sudden quench. To realize our analysis we define a qua…
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…
Entanglement and quantum correlations in many-body systems: a unified approach via local unitary operations
M. Cianciaruso, S. M. Giampaolo, W. Roga +3
Local unitary operations allow for a unifying approach to the quantification of quantum correlations among the constituents of a bipartite quantum system. For pure states, the dist…
Classical nature of ordered phases: origin of spontaneous symmetry breaking
M. Cianciaruso, L. Ferro, S. M. Giampaolo +2
We investigate the nature of spontaneous symmetry breaking in complex quantum systems by conjecturing that the maximally symmetry breaking quantum ground states are the most classi…