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arXiv 0712.3011hep-th
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过渡中的几何学:涌现几何学的一个模型

Geometry in transition: A model of emergent geometry

Rodrigo Delgadillo-Blando, Denjoe O'Connor, Badis Ydri

摘要:

本文研究了一个具有SO(3)对称性的三矩阵模型,其中矩阵的幂次不超过四次。我们发现一个奇异的线的不连续过渡的熵跳跃,一阶过渡的特点,但与发散的临界波动和发散的比热临界指数$α=1/2$。低温相是规范场在圆球上涨落的几何相。随着温度的升高,球体在向没有背景几何结构的纯基质相的过渡中蒸发。几何场和规范场都是动态确定的。发明具有本质上相似现象学的高维模型并不困难。该模型提出了一个有吸引力的图像的几何相出现的系统冷却,并建议在早期宇宙的几何出现的情况。

英文摘要:

We study a three matrix model with global SO(3) symmetry containing at most quartic powers of the matrices. We find an exotic line of discontinuous transitions with a jump in the entropy, characteristic of a 1st order transition, yet with divergent critical fluctuations and a divergent specific heat with critical exponent $α=1/2$. The low temperature phase is a geometrical one with gauge fields fluctuating on a round sphere. As the temperature increased the sphere evaporates in a transition to a pure matrix phase with no background geometrical structure. Both the geometry and gauge fields are determined dynamically. It is not difficult to invent higher dimensional models with essentially similar phenomenology. The model presents an appealing picture of a geometrical phase emerging as the system cools and suggests a scenario for the emergence of geometry in the early universe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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