Exact bosonization for an interacting fermi gas in arbitrary dimensions.
Exact bosonization for an interacting fermi gas in arbitrary dimensions.
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DOI：
10.1103/physrevlett.103.186403
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发表时间：
2009-07
影响因子：
8.6
通讯作者：
K. Efetov;C. Pépin;H. Meier
中科院分区：
文献类型：
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作者：
K. Efetov;C. Pépin;H. Meier
我们提出了一个精确的映射模型的相互作用费米子玻色子模型。玻色子对应于初始费米子模型中的集体激发。这种玻色子化适用于任何维度和费米子之间的任何相互作用。通过引入超场，我们导出了一种场论，它可以作为一种新的分析研究方法。我们示意性地显示如何映射可以用于蒙特卡罗计算，并认为它应该是免费的符号问题。
We present an exact mapping of models of interacting fermions onto boson models. The bosons correspond to collective excitations in the initial fermionic models. This bosonization is applicable in any dimension and for any interaction between fermions. Introducing superfields, we derive a field theory that may serve as a new way of analytical study. We show schematically how the mapping can be used for Monte Carlo calculations and argue that it should be free from the sign problem.