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Paper Abstract and Keywords
Presentation 2021-01-21 16:50
A Numerical Study on Stability and Mobility of Rotating Intrinsic Localized Mode in Flexible FPU-KG Mixed Lattice
Ikuma Yamaguchi, Masayuki Kimura, Shinji Doi (Kyoto Univ.) NLP2020-48
Abstract (in Japanese) (See Japanese page) 
(in English) Intrinsic Localized Mode (ILM) is known as a periodic solution where the lattice vibration is spatially localized in a nonlinear coupled oscillator. The existence of rotating ILMs (R-ILMs), in which rotational motion around the lattice axis is localized, has also been confirmed in a flexible nonlinear one-dimensional chain. In this paper, we numerically investigate the stability and mobility of R-ILMs on a nonlinear 1D-chain placed in 3D-space. First, the existence of two types of stationary R-ILMs with different symmetries was confirmed, and their stability and energy differences were investigated with respect to the angular frequency and the nonlinear coefficient of the on-site potential. Then, it was confirmed that moving R-ILMs can be generated near the parameter where the stability of the two types of stationary R-ILMs alternates, and the smaller the energy difference is, the longer distance the R-ILM can travel.
Keyword (in Japanese) (See Japanese page) 
(in English) Nonlinear lattice / Intrinsic localized mode / Rotating ILM / Moving ILM / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 330, NLP2020-48, pp. 42-47, Jan. 2021.
Paper # NLP2020-48 
Date of Issue 2021-01-14 (NLP) 
ISSN Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee NC NLP  
Conference Date 2021-01-21 - 2021-01-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) NC,NLP 
Paper Information
Registration To NLP 
Conference Code 2021-01-NC-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Numerical Study on Stability and Mobility of Rotating Intrinsic Localized Mode in Flexible FPU-KG Mixed Lattice 
Sub Title (in English)  
Keyword(1) Nonlinear lattice  
Keyword(2) Intrinsic localized mode  
Keyword(3) Rotating ILM  
Keyword(4) Moving ILM  
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1st Author's Name Ikuma Yamaguchi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Masayuki Kimura  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Shinji Doi  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2021-01-21 16:50:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2020-48 
Volume (vol) vol.120 
Number (no) no.330 
Page pp.42-47 
#Pages
Date of Issue 2021-01-14 (NLP) 


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