$Particle-antiparticle duality and fractionalization of topological chiral solitons$
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Particle-antiparticle duality and fractionalization of topological chiral solitons

Abstract Although a prototypical Su–Schrieffer–Heeger (SSH) soliton exhibits various important topological concepts including particle-antiparticle (PA) symmetry and fractional fermion charges, there have been only few advances in exploring such properties of topological solitons beyond the SSH mode...

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Autores principales:	Chang-geun Oh, Sang-Hoon Han, Seung-Gyo Jeong, Tae-Hwan Kim, Sangmo Cheon
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9fe87923940f4075afb449f407551fba
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id	oai:doaj.org-article:9fe87923940f4075afb449f407551fba
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spelling	oai:doaj.org-article:9fe87923940f4075afb449f407551fba2021-12-02T15:23:04ZParticle-antiparticle duality and fractionalization of topological chiral solitons10.1038/s41598-020-80085-82045-2322https://doaj.org/article/9fe87923940f4075afb449f407551fba2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80085-8https://doaj.org/toc/2045-2322Abstract Although a prototypical Su–Schrieffer–Heeger (SSH) soliton exhibits various important topological concepts including particle-antiparticle (PA) symmetry and fractional fermion charges, there have been only few advances in exploring such properties of topological solitons beyond the SSH model. Here, by considering a chirally extended double-Peierls-chain model, we demonstrate novel PA duality and fractional charge e/2 of topological chiral solitons even under the chiral symmetry breaking. This provides a counterexample to the belief that chiral symmetry is necessary for such PA relation and fractionalization of topological solitons in a time-reversal invariant topological system. Furthermore, we discover that topological chiral solitons are re-fractionalized into two subsolitons which also satisfy the PA duality. As a result, such dualities and fractionalizations support the topological $$\mathbb {Z}_4$$ Z 4 algebraic structures. Our findings will inspire researches seeking feasible and promising topological systems, which may lead to new practical applications such as solitronics.Chang-geun OhSang-Hoon HanSeung-Gyo JeongTae-Hwan KimSangmo CheonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chang-geun Oh Sang-Hoon Han Seung-Gyo Jeong Tae-Hwan Kim Sangmo Cheon Particle-antiparticle duality and fractionalization of topological chiral solitons
description	Abstract Although a prototypical Su–Schrieffer–Heeger (SSH) soliton exhibits various important topological concepts including particle-antiparticle (PA) symmetry and fractional fermion charges, there have been only few advances in exploring such properties of topological solitons beyond the SSH model. Here, by considering a chirally extended double-Peierls-chain model, we demonstrate novel PA duality and fractional charge e/2 of topological chiral solitons even under the chiral symmetry breaking. This provides a counterexample to the belief that chiral symmetry is necessary for such PA relation and fractionalization of topological solitons in a time-reversal invariant topological system. Furthermore, we discover that topological chiral solitons are re-fractionalized into two subsolitons which also satisfy the PA duality. As a result, such dualities and fractionalizations support the topological $$\mathbb {Z}_4$$ Z 4 algebraic structures. Our findings will inspire researches seeking feasible and promising topological systems, which may lead to new practical applications such as solitronics.
format	article
author	Chang-geun Oh Sang-Hoon Han Seung-Gyo Jeong Tae-Hwan Kim Sangmo Cheon
author_facet	Chang-geun Oh Sang-Hoon Han Seung-Gyo Jeong Tae-Hwan Kim Sangmo Cheon
author_sort	Chang-geun Oh
title	Particle-antiparticle duality and fractionalization of topological chiral solitons
title_short	Particle-antiparticle duality and fractionalization of topological chiral solitons
title_full	Particle-antiparticle duality and fractionalization of topological chiral solitons
title_fullStr	Particle-antiparticle duality and fractionalization of topological chiral solitons
title_full_unstemmed	Particle-antiparticle duality and fractionalization of topological chiral solitons
title_sort	particle-antiparticle duality and fractionalization of topological chiral solitons
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9fe87923940f4075afb449f407551fba
work_keys_str_mv	AT changgeunoh particleantiparticledualityandfractionalizationoftopologicalchiralsolitons AT sanghoonhan particleantiparticledualityandfractionalizationoftopologicalchiralsolitons AT seunggyojeong particleantiparticledualityandfractionalizationoftopologicalchiralsolitons AT taehwankim particleantiparticledualityandfractionalizationoftopologicalchiralsolitons AT sangmocheon particleantiparticledualityandfractionalizationoftopologicalchiralsolitons
_version_	1718387343061155840

Particle-antiparticle duality and fractionalization of topological chiral solitons

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