Symmetry resolved entanglement in free fermionic systems
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ab4b77
Abstract: We consider the symmetry resolved Renyi entropies in the one dimensional tight binding model, equivalent to the spin-1/2 XX chain in a magnetic field. We exploit the generalised Fisher-Hartwig conjecture to obtain the asymptotic behaviour… read more here.
Keywords: resolved entanglement; fermionic systems; free fermionic; entanglement free ... See more keywords
Entanglement spectrum in general free fermionic systems
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ac5529
Abstract: The statistical mechanics characterization of finite subsystems embedded in an infinite system is a fundamental question of quantum physics. Nevertheless, a full closed form for all required entropic measures does not exist in the general… read more here.
Keywords: free fermionic; physics; fermionic systems; general free ... See more keywords
Free-parafermionic Z(N) and free-fermionic XY quantum chains.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review. E"
DOI: 10.1103/physreve.104.054121
Abstract: The relationship between the eigenspectrum of Ising and XY quantum chains is well known. Although the Ising model has a Z(2) symmetry and the XY model a U(1) symmetry, both models are described in terms… read more here.
Keywords: jordan wigner; model symmetry; free fermionic; quantum chains ... See more keywords
Free-Fermionic Topological Quantum Sensors.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.090503
Abstract: Second order quantum phase transitions, with well-known features such as long-range entanglement, symmetry breaking, and gap closing, exhibit quantum enhancement for sensing at criticality. However, it is unclear which of these features are responsible for… read more here.
Keywords: quantum sensors; quantum; long range; topological quantum ... See more keywords