受控库仑爆炸中的模拟de Sitter空间
Analog de Sitter space in a controlled Coulomb explosion
摘要：
由激光控制的随时间变化的电荷引导的原子气体的库仑爆炸可以用一个数量不守恒的全同电荷的宏观系统来模拟。我们表明，这样的系统可以在空间均匀和各向同性的方式，模仿加速宇宙膨胀的演变。具体来说，对于恒定的电荷产生速率，所得到的弗里德曼-库仑方程具有对应于de Sitter空间的模拟的稳定不动点。
英文摘要：
The Coulomb explosion of an atomic gas steered by laser-controlled time-dependent charging can be modeled by a macroscopic system of identical charges whose number is not conserved. We show that such a system can evolve in the spatially homogeneous and isotropic fashion that mimics accelerating cosmic expansions. Specifically, for a constant rate of charge production, the resulting Friedmann-Coulomb equations have a stable fixed point corresponding to an analog of de Sitter space.
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