Correlation functions of the Kitaev model with a spatially modulated phase in the superconducting order parameter

FG Medina Cuy, F Dolcini - Physical Review B, 2024 - APS
The Kitaev chain model with a spatially modulated phase in the superconducting order
parameter exhibits two types of topological transitions, namely, a band topology transition …

Effect of the Dzyaloshinskii-Moriya interaction on quantum speed limit and orthogonality catastrophe

ZR Zhu, Q Wang, B Shao, J Zou, LA Wu - Physical Review A, 2023 - APS
We study the effect of the Dzyaloshinskii-Moriya (DM) interaction on the quantum speed limit
(QSL) and orthogonality catastrophe (OC) in XY spin chains. With an initial sudden quench …

Multipartite entanglement at dynamical quantum phase transitions with nonuniformly spaced criticalities

S Haldar, S Roy, T Chanda, A Sen, U Sen - Physical Review B, 2020 - APS
We report a dynamical quantum phase transition portrait in the alternating field transverse
XY spin chain with Dzyaloshinskii-Moriya interaction by investigating singularities in the …

Field-Induced Ordered Phases in Anisotropic Spin-1/2 Kitaev Chains

M Bhullar, H Xu, HY Kee - arxiv preprint arxiv:2501.03329, 2025 - arxiv.org
Motivated by intense research on two-dimensional spin-1/2 Kitaev materials, Kitaev spin
chains and ladders, though geometrically limited, have been studied for their numerical …

Magnetic phase diagram of a spin-1/2 chain with modulated Dzyaloshinskii-Moriya interaction

GI Japaridze, H Cheraghi, S Mahdavifar - Physical Review E, 2021 - APS
We consider the ground-state phase diagram of a one-dimensional spin-1/2 XXZ chain with
a spatially modulated Dzyaloshinskii-Moriya interaction in the presence of an alternating …

Detecting exceptional points through dynamics in non-Hermitian systems

K Das Agarwal, TK Konar, LGC Lakkaraju, A Sen - Physical Review A, 2024 - APS
Non-Hermitian rotation-time reversal (RT)-symmetric spin models possess two distinct
phases, the unbroken phase in which the entire spectrum is real and the broken phase …

Signature of topology via heat transfer analysis in the Su–Schrieffer–Heeger (SSH) model

V Upadhyay, MT Naseem… - New Journal of …, 2024 - iopscience.iop.org
In this work, we explore how thermodynamics can be a potential tool for identifying the
topological phase transition. Specifically, we focus on a one-dimensional Su–Schrieffer …

Detection of an unbroken phase of a non-Hermitian system via a Hermitian factorization surface

LGC Lakkaraju, A Sen - Physical Review A, 2021 - APS
In the traditional quantum theory, one-dimensional quantum spin models possess a
factorization surface where the ground states are fully separable and have vanishing …

Long-range spin chirality dimer order in the Heisenberg chain with modulated Dzyaloshinskii-Moriya interactions

N Avalishvili, GI Japaridze, GL Rossini - Physical Review B, 2019 - APS
The ground-state phase diagram of a spin S= 1 2 XXZ Heisenberg chain with spatially
modulated Dzyaloshinskii-Moriya interaction H=∑ n {JS nx S n+ 1 x+ S ny S n+ 1 y+ J z S nz …

Anomalous behavior in entanglement speed profile through spin chains

F Sadeghi, M Motamedifar, M Golshani - Physical Review E, 2024 - APS
The origin of the uniform Dzyaloshinskii-Moriya interaction (DMI), which is responsible for
the creation of chiral magnetism, has been the subject of extensive research. Recently …