Researchers Tian-Shun Chen, Xiao-Ding Zhou, and Kilar Zhang from the University of Chinese Academy of Sciences have made significant strides in understanding the stability of multi-fluid stars, a topic with potential implications for energy research, particularly in the realm of nuclear and dark matter equations of state.
In their recent study, the researchers established a mathematical equivalence between two independent criteria for the marginal stability of multi-fluid relativistic stars. The first criterion is dynamic, based on the vanishing of the fundamental radial pulsation mode’s eigenfrequency. The second is static, derived from the geometric alignment of mass and particle number gradients in the parameter space. This equivalence allows for a more robust and computationally efficient framework to map the stability boundaries for multi-fluid mixed stars across the entire parameter space of central pressures.
The researchers applied their analysis to various nuclear and dark matter equations of state. Their findings revealed the existence of stable regions in the observable mass-radius diagram. By using 3-dimensional Mass-Radius-Pressure diagrams, they were able to resolve degeneracies and provide a complete topological view of the ensemble.
The practical applications of this research for the energy sector are primarily indirect but significant. A better understanding of the stability of multi-fluid stars can enhance our knowledge of nuclear and dark matter equations of state, which are crucial for advancing nuclear energy technologies and exploring new energy sources. The research was published in the journal Physical Review D.
This article is based on research available at arXiv.