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arXiv 1608.07795hep-th
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具有虚化学势的$3d$费米子-玻色子图

$3d$ fermion-boson map with imaginary chemical potential

E. G. Filothodoros, A. C. Petkou, N. D. Vlachos

摘要:

我们研究了带有固定$U(1)$电荷的三维$U(N)$ Gross-Neveu模型和CP $^{N-1}$模型.对于大的- $N$,这与将模型耦合到交换背景中的Chern-Simons密切相关。我们表明,虚化学势的存在下,$U(1)$收费使模型的相结构非常相似。我们计算了它们各自的大- $N$自由能量密度,并表明它们以精确的方式相互映射。有趣的是,自由能图涉及布洛赫-维格纳函数及其由Zagier引入的推广。我们希望我们的结果与最近讨论的$3d$玻色子化有关。

英文摘要:

We study the three-dimensional $U(N)$ Gross-Neveu and CP$^{N-1}$ models in the canonical formalism with fixed $U(1)$ charge. For large-$N$ this is closely related to coupling the models to abelian Chern-Simons in a monopole background. We show that the presence of the imaginary chemical potential for the $U(1)$ charge makes the phase structure of the models remarkably similar. We calculate their respective large-$N$ free energy densities and show that they are mapped into each other in a precise way. Intriguingly, the free energy map involves the Bloch-Wigner function and its generalizations introduced by Zagier. We expect that our results are connected to the recently discussed $3d$ bosonization.

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