标题： 施温格模型中费米子作用量的标度检验 显示英文标题

标题： Scaling test of fermion actions in the Schwinger model

摘要： 我们讨论了二维质量 Dirac 模型动力学模拟中不同费米子作用的尺度行为。我们选择了 Wilson、超立方体、扭曲质量以及重叠费米子作用。作为物理可观测量，对于上述作用，在若干耦合值和费米子质量下计算了 pion 质量和标量凝聚。我们还讨论了动态模拟重叠费米子的可能性，以避免重叠核低特征值带来的问题。 显示英文摘要

摘要： We discuss the scaling behaviour of different fermion actions in dynamical simulations of the 2-dimensional massive Schwinger model. We have chosen Wilson, hypercube, twisted mass and overlap fermion actions. As physical observables, the pion mass and the scalar condensate are computed for the above mentioned actions at a number of coupling values and fermion masses. We also discuss possibilities to simulate overlap fermions dynamically avoiding problems with low-lying eigenvalues of the overlap kernel.