陈-西蒙斯理论 (英語:Chern–Simons theory )以陈省身 和詹姆斯·哈里斯·西蒙斯 的名字命名,描述三维拓扑量子場論 ,在物理學有很多應用。此理論用陳-西蒙斯形式 。
陈省身
陳-西蒙斯理论描述分數量子霍爾效應 ,導致2016年的物理諾貝爾獎 。
若(G,M)是主丛 ,M是流形,G是李群 / 规范群,A是联络 ,陈西蒙斯作用量 是
S
=
k
4
π
∫
M
tr
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A
∧
d
A
+
2
3
A
∧
A
∧
A
)
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{\displaystyle S={\frac {k}{4\pi }}\int _{M}{\text{tr}}\,(A\wedge dA+{\tfrac {2}{3}}A\wedge A\wedge A).}
F是曲率:
F
=
d
A
+
A
∧
A
{\displaystyle F=dA+A\wedge A\,}
陈西蒙斯公式 用最小作用量原理 :
0
=
δ
S
δ
A
=
k
2
π
F
.
{\displaystyle 0={\frac {\delta S}{\delta A}}={\frac {k}{2\pi }}F.}
三维的陈-西蒙斯理论 生成很多重要的纽结多项式和纽结不变量:[ 1]
拓扑量子计算机 是一种量子计算机 。陈西蒙斯理论陈述有些拓扑量子计算机 的模型,例如“杨李模型”(Fibonacci model),这是最简单的非阿贝尔 任意子 拓扑量子计算机 之一。[ 2] [ 3]
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