Non-Hermitian topology in rock–paper–scissors games

Abstract Non-Hermitian topology is a recent hot topic in condensed matters. In this paper, we propose a novel platform drawing interdisciplinary attention: rock–paper–scissors (RPS) cycles described by the evolutionary game theory. Specifically, we demonstrate the emergence of an exceptional point a...

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Main Authors: Tsuneya Yoshida, Tomonari Mizoguchi, Yasuhiro Hatsugai
Format: Article
Language:English
Published: Nature Portfolio 2022-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-04178-8
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author Tsuneya Yoshida
Tomonari Mizoguchi
Yasuhiro Hatsugai
author_facet Tsuneya Yoshida
Tomonari Mizoguchi
Yasuhiro Hatsugai
author_sort Tsuneya Yoshida
collection DOAJ
description Abstract Non-Hermitian topology is a recent hot topic in condensed matters. In this paper, we propose a novel platform drawing interdisciplinary attention: rock–paper–scissors (RPS) cycles described by the evolutionary game theory. Specifically, we demonstrate the emergence of an exceptional point and a skin effect by analyzing topological properties of their payoff matrix. Furthermore, we discover striking dynamical properties in an RPS chain: the directive propagation of the population density in the bulk and the enhancement of the population density only around the right edge. Our results open new avenues of the non-Hermitian topology and the evolutionary game theory.
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spelling doaj.art-9b9a6297845e4e0e8bbcb663563f3f652022-12-21T21:20:05ZengNature PortfolioScientific Reports2045-23222022-01-011211710.1038/s41598-021-04178-8Non-Hermitian topology in rock–paper–scissors gamesTsuneya Yoshida0Tomonari Mizoguchi1Yasuhiro Hatsugai2Department of Physics, University of TsukubaDepartment of Physics, University of TsukubaDepartment of Physics, University of TsukubaAbstract Non-Hermitian topology is a recent hot topic in condensed matters. In this paper, we propose a novel platform drawing interdisciplinary attention: rock–paper–scissors (RPS) cycles described by the evolutionary game theory. Specifically, we demonstrate the emergence of an exceptional point and a skin effect by analyzing topological properties of their payoff matrix. Furthermore, we discover striking dynamical properties in an RPS chain: the directive propagation of the population density in the bulk and the enhancement of the population density only around the right edge. Our results open new avenues of the non-Hermitian topology and the evolutionary game theory.https://doi.org/10.1038/s41598-021-04178-8
spellingShingle Tsuneya Yoshida
Tomonari Mizoguchi
Yasuhiro Hatsugai
Non-Hermitian topology in rock–paper–scissors games
Scientific Reports
title Non-Hermitian topology in rock–paper–scissors games
title_full Non-Hermitian topology in rock–paper–scissors games
title_fullStr Non-Hermitian topology in rock–paper–scissors games
title_full_unstemmed Non-Hermitian topology in rock–paper–scissors games
title_short Non-Hermitian topology in rock–paper–scissors games
title_sort non hermitian topology in rock paper scissors games
url https://doi.org/10.1038/s41598-021-04178-8
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