Long-range entanglement and topological excitations
Gianpaolo Torre, Jovan Odavić, Pierre Fromholz, Salvatore Marco Giampaolo, Fabio Franchini
SciPost Phys. Core 7, 050 (2024) · published 5 August 2024
- doi: 10.21468/SciPostPhysCore.7.3.050
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Abstract
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.
Cited by 2
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Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Gianpaolo Torre,
- 1 2 Jovan Odavić,
- 3 Pierre Fromholz,
- 1 Salvatore Marco Giampaolo,
- 1 Fabio Franchini
- 1 Institut Ruđer Bošković / Rudjer Boskovic Institute [RBI]
- 2 Università degli Studi di Napoli Federico II / University of Naples Federico II
- 3 Universität Basel / University of Basel
- European Regional Development Fund [ERDF]
- Hrvatska Zaklada za Znanost (through Organization: Hrvatska zaklada za znanost / Croatian Science Foundation [HRZZ])
- Ministero dell'Università e della Ricerca
- National Science Foundation [NSF]