同时存在的竞争订单中的元稳定性
Yasamin Masoumi1, Alberto de la Torre1,2, Gregory A Fiete1,2,3
1Northeastern University, Department of Physics, Boston, Massachusetts 02115, USA.
Physical review letters
|August 27, 2025
概括
这项研究使用超快激光脉冲探索具有竞争性顺序参数的系统中的动态相位过渡. 它揭示了增强的秩序参数和超稳定状态,解释了超导体和宇宙学的现象.
科学领域:
- 凝聚物质物理学
- 不平衡的动态
- 宇宙模型
背景情况:
- 动态相变对于理解远离平衡的系统至关重要.
- 相互竞争的顺序参数在外部刺激下呈现复杂的行为.
- 超快激光脉冲提供了一个强大的工具来探测不平衡的动态.
研究的目的:
- 在具有两个竞争顺序参数的系统中研究动态相位过渡.
- 分析激光引发的超高速动态对这些系统的影响.
- 解释超导体的实验结果并探索更广泛的应用.
主要方法:
- 使用了时间依赖的金兹堡-兰多 (TDGL) 框架.
- 使用分析和数值研究来研究系统动态.
- 研究了订单参数波动在自由能源环境中的作用.
主要成果:
- 在激光脉冲后的平均场值较小时, 顺序参数显著增强.
- 发现一种诱导性转移稳定状态的出现.
- 揭示了热和非热波动对元稳态动态的显著影响.
结论:
- 这项研究为理解具有竞争秩序的系统中的超快现象提供了框架.
- 提供了对充电密度波的超导体无法解释的实验发现的解释.
- 开发的形式主义适用于多种不平衡的系统,包括像基布尔-祖雷克这样的宇宙模型.
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