Finite-density Monte Carlo calculations on sign-optimized manifolds

Finite-density Monte Carlo calculations on sign-optimized manifolds
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符号优化流形上的有限密度蒙特卡罗计算

DOI:
10.1103/physrevd.97.094510
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发表时间:
2018
期刊:
影响因子:
5
通讯作者:
S. Lawrence
S. Lawrence
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
A. Alexandru;P. Bedaque;Henry Lamm;S. Lawrence

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被引文献

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我们提出了一个通用的技术,用于解决场理论的蒙特卡罗模拟中出现的符号问题。该方法将路径积分的域变形为复域空间中的流形,使参数化流形族内的平均符号最大化(从而减少符号问题)。本文给出了Wilson费米子在40 × 10 ~(-1)维Thirring模型中的计算结果。这种方法达到更高的$\mu$然后以前的技术,同时大大减少所需的计算时间。
We present a general technique for addressing sign problems that arise in Monte Carlo simulations of field theories. This method deforms the domain of the path integral to a manifold in complex field space that maximizes the average sign (therefore reducing the sign problem) within a parameterized family of manifolds. We presents results for the $1+1$ dimensional Thirring model with Wilson fermions on lattice sizes up to $40\times 10$. This method reaches higher $\mu$ then previous techniques while substantially decreasing the computational time required.