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Diffusive and Arrestedlike Dynamics in Currency Exchange Markets.
J Clara-Rahola1,2, A M Puertas1, M A Sánchez-Granero3
1Department of Applied Physics, University of Almería, 04120 Almería, Spain.
Physical Review Letters
|February 25, 2017
Summary
This study reveals a surprising symmetry between colloidal particle dynamics and Euro-U.S. dollar (EURUSD) exchange rate fluctuations. Models for arrested physical systems accurately describe EURUSD price dynamics, particularly around market closures.
Area of Science:
- Physics
- Finance
- Complex Systems
Background:
- Colloidal dynamics and financial markets exhibit complex behaviors.
- Understanding fluctuation distributions is key in both fields.
- Previous research has not extensively linked these two domains.
Purpose of the Study:
- To investigate the symmetry between colloidal dynamics and Euro-U.S. dollar (EURUSD) exchange rate market dynamics.
- To determine if physical system models can describe financial market fluctuations.
- To analyze the mean-squared price displacement (MSPD) and correlation functions of EURUSD.
Main Methods:
- Analysis of EURUSD price data from 2001-2015.
- Comparison of fluctuation distributions with colloidal particle models in supercooled/arrested states.
- Calculation of mean-squared price displacement (MSPD) and price correlation functions.
- Application of theoretical models for arrested physical systems.
Main Results:
- Significant qualitative symmetry found between EURUSD fluctuation distributions and colloidal dynamics.
- Models for arrested physical systems effectively describe EURUSD fluctuation distributions.
- A two-step MSPD observed during specific intraday periods, especially around the New York Stock Exchange market close, mirroring supercooled systems.
- Price correlation functions and non-Gaussian parameters support the analogy.
Conclusions:
- The dynamics of the EURUSD exchange rate market exhibit remarkable similarities to colloidal systems.
- Physical models for arrested and supercooled states offer a valid framework for analyzing financial market fluctuations.
- The observed symmetry provides new insights into the underlying mechanisms driving financial market behavior.
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