118 citations · 1.2k across the 87 of their papers we have counts for
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quant-ph2018★ 7 cited
Vanishing k-space fidelity and phase diagram's bulk-edge-bulk correspondence
P. D. Sacramento, B. Mera, N. Paunkovic
The fidelity between two infinitesimally close states or the fidelity susceptibility of a system are known to detect quantum phase transitions. Here we show that the k-space fideli…
quant-ph2011★ 15 cited
Fidelity spectrum and phase transitions of quantum systems
P. D. Sacramento, N. Paunkovic, V. R. Vieira
Quantum fidelity between two density matrices, is usually defined as the trace of the operator . We study the logarithmic sp…
quant-ph2007★ 78 cited
Fidelity Between Partial States as Signature of Quantum Phase Transitions
N. Paunkovic, P. D. Sacramento, P. Nogueira +2
We introduce a partial state fidelity approach to quantum phase transitions. We consider a superconducting lattice with a magnetic impurity inserted at its centre, and look at the…