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arXiv 0911.4099hep-lat
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没有临界慢化的Wilson费米子的模拟

Simulating Wilson fermions without critical slowing down

Urs Wenger

摘要:

基于费米子作用量的精确跳跃展开,提出了一种Wilson费米子的模拟算法。该算法通过对费米子两点关联函数进行采样,基本上消除了临界慢化,并允许直接在无质量极限下进行模拟。作为说明性的例子,该算法被应用到Gross-Neveu和Schwinger模型,后者在强耦合极限。

英文摘要:

We present a simulation algorithm for Wilson fermions based on the exact hopping expansion of the fermion action. The algorithm essentially eliminates critical slowing down by sampling the fermionic two-point correlation function and it allows simulations directly in the massless limit. As illustrative examples, the algorithm is applied to the Gross-Neveu and the Schwinger model, the latter in the strong coupling limit.

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