Fate of Majorana fermions and Chern numbers after a quantum quench

PD Sacramento - Physical Review E, 2014 - APS
In the sequence of quenches to either nontopological phases or other topological phases,
we study the stability of Majorana fermions at the edges of a two-dimensional topological …

General monogamy relation of multiqubit systems in terms of squared Rényi- entanglement

W Song, YK Bai, M Yang, M Yang, ZL Cao - Physical Review A, 2016 - APS
We prove that the squared Rényi-α entanglement (SR α E), which is the generalization of
entanglement of formation, obeys a general monogamy inequality in an arbitrary N-qubit …

Entanglement spectrum and entropy in Floquet topological matter

L Zhou - Physical Review Research, 2022 - APS
Entanglement is one of the most fundamental features of quantum systems. In this work, we
obtain the entanglement spectrum and entropy of Floquet noninteracting fermionic lattice …

Topological entanglement properties of disconnected partitions in the Su-Schrieffer-Heeger model

T Micallo, V Vitale, M Dalmonte, P Fromholz - SciPost Physics Core, 2020 - scipost.org
We study the disconnected entanglement entropy, $ S^ D $, of the Su-Schrieffer-Heeger
model. $ S^ D $ is a combination of both connected and disconnected bipartite …

Disordered Kitaev chain with long-range pairing: Loschmidt echo revivals and dynamical phase transitions

U Mishra, R Jafari, A Akbari - Journal of Physics A: Mathematical …, 2020 - iopscience.iop.org
We explore the dynamics of long-range Kitaev chain by varying pairing interaction exponent.
It is well known that the distinctive features of the nonequilibrium dynamics of a closed …

Survival probability of an edge Majorana in a one-dimensional -wave superconducting chain under sudden quenching of parameters

A Rajak, A Dutta - Physical Review E, 2014 - APS
We consider the temporal evolution of a zero-energy edge Majorana of a spinless p-wave
superconducting chain following a sudden change of a parameter of the Hamiltonian …

Entanglement Rényi entropy

YX Wang, LZ Mu, V Vedral, H Fan - Physical Review A, 2016 - APS
We study the entanglement Rényi α entropy (ER α E) as the measure of entanglement.
Instead of a single quantity in standard entanglement quantification for a quantum state by …

Universal nonanalytic behavior of the Hall conductance in a Chern insulator at the topologically driven nonequilibrium phase transition

P Wang, M Schmitt, S Kehrein - Physical Review B, 2016 - APS
We study the Hall conductance of a Chern insulator after a global quench of the
Hamiltonian. The Hall conductance in the long time limit is obtained by applying the linear …

On the entropic derivation of the r− 2 Newtonian gravity force

A Plastino, MC Rocca - Physica A: Statistical Mechanics and its …, 2018 - Elsevier
Following Verlinde's conjecture, we show that Tsallis' classical free particle distribution at
temperature T can generate Newton's gravitational force's r− 2 distance's dependence. If we …

Multipartite entanglement of the topologically ordered state in a perturbed toric code

YR Zhang, Y Zeng, T Liu, H Fan, JQ You, F Nori - Physical Review Research, 2022 - APS
We demonstrate that multipartite entanglement, witnessed by the quantum Fisher
information, can characterize topological quantum phase transitions in the spin-1 2 toric …