4 papers
Entanglement entropy in the Long-Range Kitaev chain
F. Ares, J. G. Esteve, F. Falceto +1
In this paper we complete the study on the asymptotic behaviour of the entanglement entropy for Kitaev chains with long range pairing. We discover that when the couplings decay wit…
Equations of Motion as Covariant Gauss Law: The Maxwell-Chern-Simons Case
A. P. Balachandran, Arshad Momen, Amilcar R. de Queiroz
Time-independent gauge transformations are implemented in the canonical formalism by the Gauss law which is not covariant. The covariant form of Gauss law is conceptually important…
Orthogonality catastrophe and fractional exclusion statistics
Filiberto Ares, Kumar S. Gupta, Amilcar R. de Queiroz
We show that the -particle Sutherland model with inverse-square and harmonic interactions exhibits orthogonality catastrophe. For a fixed value of the harmonic coupling, the ove…
Entanglement entropy and Möbius transformations for critical fermionic chains
F. Ares, J. G. Esteve, F. Falceto +1
Entanglement entropy may display a striking new symmetry under Möbius transformations. This symmetry was analysed in our previous work for the case of a non-critical (gapped) free…