Coupled Harmonic Oscillators Model for Financial Time Series

  • Monique Rafaella Anunciação de Oliveira Universidade Federal de Ouro Preto
  • Lucélia Viviane Vaz Raad
  • A. R. Bosco de Magalhães
Palavras-chave: Econophysics, Harmonic oscillator network, Financial market model, Heavy-tailed distribution, Multifractal time series

Resumo

Neste artigo, apresentamos um modelo baseado em osciladores harmônicos dissipativos linearmente acoplados para caracterizar a dinâmica dos preços de ativos, cujos elementos fundamentais são forças restauradoras, inércia e amortecimento. As variáveis dinâmicas do sistema físico são substituídas por diferenças logarítmicas entre os preços dos ativos e preços de referência calculados por meio de médias móveis. O modelo é aplicado à ações que compõem o índice brasileiro Ibovespa. Os coeficientes de amortecimento e as constantes elásticas estimados sugerem a presença de forças atrativas e repulsivas no mercado, com tendência à regressão à média e a movimentos amortecidos conjuntos do mercado. As distribuições desses parâmetros indicam variações significativas no grau de interconexão entre as ações, oferecendo percepções valiosas para a seleção de ativos em estratégias de hedge. Quantidades análogas às energias cinética e potencial exibem distribuições com caudas em lei de potência e comportamento multifractal, e suas dinâmicas revelam indícios de eventos que impactaram tanto os mercados domésticos quanto os internacionais.

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Publicado
2026-06-01
Como Citar
de Oliveira, M. R. A., Raad, L. V. V., & de Magalhães, A. R. B. (2026). Coupled Harmonic Oscillators Model for Financial Time Series. Revista De Matemática Da UFOP, 1(1). https://doi.org/10.63801/rmat.v1i1.8528
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