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Entropy of strongly coupled Yukawa fluids
1<a href="https://ror.org/04gns8903">Joint Institute for High Temperatures</a>, Russian Academy of Sciences, 125412 Moscow, Russia.
Physical Review. E
|October 19, 2024
Summary
This study estimates the entropy of Yukawa fluids using atomic dynamics and explains its freezing point behavior. It also examines excess entropy scaling for transport properties in systems like dusty plasmas.
Area of Science:
- Statistical Mechanics
- Soft Matter Physics
Background:
- Understanding the thermodynamic properties of strongly coupled fluids is crucial for various physical systems.
- Yukawa fluids serve as a model for systems with screened electrostatic interactions.
Purpose of the Study:
- To provide accurate entropy estimations for strongly coupled Yukawa fluids.
- To investigate the behavior of excess entropy at the freezing point and its relation to transport properties.
Main Methods:
- Utilizing a vibrational paradigm of atomic dynamics for entropy estimation.
- Analyzing excess entropy scaling with freezing temperature and transport coefficients.
- Examining the Frenkel line location on the phase diagram.
Main Results:
- A parameter-free method for accurate entropy estimation was developed.
- A quasi-universal excess entropy at freezing and its weak dependence on the screening parameter were explained.
- Modified Rosenfeld-Tarazona scaling and excess entropy scaling of transport coefficients were discussed.
Conclusions:
- The findings offer insights into the thermodynamics and phase behavior of Yukawa systems.
- The results are relevant for complex plasmas, colloidal suspensions, and electrolytes.
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