Partial time-reversal transformation and entanglement negativity in fermionic systems

H Shapourian, K Shiozaki, S Ryu - Physical Review B, 2017 - APS
The partial transpose of density matrices in many-body quantum systems, in which one
takes the transpose only for a subsystem of the full Hilbert space, has been recognized as a …

Disorder-induced topological phase transition in a driven Majorana chain

H Ling, P Richard, SR Koshkaki, M Kolodrubetz… - Physical Review B, 2024 - APS
We study a periodically driven one-dimensional Kitaev model in the presence of disorder. In
the clean limit our model exhibits four topological phases corresponding to the existence or …

Interplay between topology and disorder in a two-dimensional semi-Dirac material

PV Sriluckshmy, K Saha, R Moessner - Physical Review B, 2018 - APS
We investigate the role of disorder in a two-dimensional semi-Dirac material characterized
by a linear dispersion in one direction and a parabolic dispersion in the orthogonal direction …

Multiple signatures of topological transitions for interacting fermions in chain lattices

YH Chan, CK Chiu, K Sun - Physical Review B, 2015 - APS
We study one-component fermions in chain lattices with proximity-induced superconducting
gap and interparticle short-range interaction, capable of hosting Majorana fermions. By …

Entanglement spectrum of su-schrieffer-heeger-hubbard model

BT Ye, LZ Mu, H Fan - Physical Review B, 2016 - APS
We investigate the entanglement spectrum of the ground state of the Su-Schrieffer-Heeger-
Hubbard model. The topological phases of the model can be identified by degeneracy of the …

Anderson topological superconductor

J Borchmann, A Farrell, T Pereg-Barnea - Physical Review B, 2016 - APS
In this paper we study the phase diagram of a disordered, spin-orbit coupled superconductor
with s-wave or d+ id-wave pairing symmetry in symmetry class D. We analyze the …

Entanglement spectrum of a random partition: Connection with the localization transition

S Vijay, L Fu - Physical Review B, 2015 - APS
We study the entanglement spectrum of a translationally invariant lattice system under a
random partition, implemented by choosing each site to be in one subsystem with probability …

(2+ 1) D topological phases with RT symmetry: many-body invariant, classification, and higher order edge modes

R Kobayashi, Y Zhang, YQ Wang… - arXiv preprint arXiv …, 2024 - arxiv.org
It is common in condensed matter systems for reflection ($ R $) and time-reversal ($ T $)
symmetry to both be broken while the combination $ RT $ is preserved. In this paper we …

Entanglement spectroscopy of anomalous surface states

A Dey, DF Mross - Physical Review Research, 2024 - APS
We study the entanglement spectra of surface states of symmetry-protected topological
phases. The topological bulk imprints the surface with an anomaly that does not permit it to …

Bulk entanglement spectrum in gapped spin ladders

RA Santos, CM Jian, R Lundgren - Physical Review B, 2016 - APS
We study the bulk entanglement of a series of gapped ground states of spin ladders,
representative of the Haldane phase. These ground states of spin S/2 ladders generalize the …