1,241 research outputs found
Transient trapping into metastable states in systems with competing orders
The quench dynamics of a system involving two competing orders is
investigated using a Ginzburg-Landau theory with relaxational dynamics. We
consider the scenario where a pump rapidly heats the system to a high
temperature, after which the system cools down to its equilibrium temperature.
We study the evolution of the order parameter amplitude and fluctuations in the
resulting time dependent free energy landscape. Exponentially growing thermal
fluctuations dominate the dynamics. The system typically evolves into the phase
associated with the faster-relaxing order parameter, even if it is not the
global free energy minimum. This theory offers a natural explanation for the
widespread experimental observation that metastable states may be induced by
laser induced collapse of a dominant equilibrium order parameter.Comment: 12 pages, 7 figure
Research on the Problems of Housing Prices in Qingdao from a Macro Perspective
Qingdao is a seaside city. Taking into account the characteristics of Qingdao, this article established a multiple linear regression model to analyze the impact of macroeconomic factors on housing prices. We used stepwise regression method to make multiple linear regression analysis, and made statistical analysis of F test values and T test values. According to the analysis results, the model is continuously optimized. Finally, this article obtained the multiple linear regression equation and the influencing factors, and the reliability of the model was verified by F test and T test
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