TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.7.3.050
TI  - Long-range entanglement and topological excitations
PY  - 2024/08/05
UR  - https://scipost.org/SciPostPhysCore.7.3.050
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 7
IS  - 3
SP  - 050
A1  - Torre, Gianpaolo
AU  - Odavić, Jovan
AU  - Fromholz, Pierre
AU  - Giampaolo, Salvatore Marco
AU  - Franchini, Fabio
AB  - Topological order comes in different forms, and its classification and detection is an important field of modern research. In this work, we show that the Disconnected Entanglement Entropy, a measure originally introduced to identify topological phases, is also able to unveil the long-range entanglement (LRE) carried by a single, fractionalized excitation. We show this by considering a quantum, delocalized domain wall excitation that can be introduced into a system by inducing geometric frustration in an antiferromagnetic spin chain. Furthermore, we show that the LRE of such systems is resilient against a quantum quench and the introduction of disorder, as it happens in traditional symmetry-protected topological phases. All these evidences establish the existence of a new phase induced by frustration with topological features despite not being of the usual type.
ER  -

@Article{10.21468/SciPostPhysCore.7.3.050,
	title={{Long-range entanglement and topological excitations}},
	author={Gianpaolo Torre and Jovan Odavić and Pierre Fromholz and Salvatore Marco Giampaolo and Fabio Franchini},
	journal={SciPost Phys. Core},
	volume={7},
	pages={050},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.7.3.050},
	url={https://scipost.org/10.21468/SciPostPhysCore.7.3.050},
}