标题： 威尔逊费米子的施温格模型的临界行为 显示英文标题

标题： Critical Behavior of the Schwinger Model with Wilson Fermions

摘要： 我们在MFA方法框架下，对具有威尔逊费米子的格点施温格模型在至$24^2$的格点上的临界行为进行了详细分析，通过研究李-杨零点和比热。 我们发现有力的证据表明，在大$\beta$时，临界线终止于$\kappa = 0.25$。 在格点$8^2,12^2,16^2, 20^2$和$24^2$上进行的有限尺寸标度分析表明存在连续相变。 在所研究的$\beta$区域内验证了超尺度关系。 显示英文摘要

摘要： We present a detailed analysis, in the framework of the MFA approach, of the critical behaviour of the lattice Schwinger model with Wilson fermions on lattices up to $24^2$, through the study of the Lee-Yang zeros and the specific heat. We find compelling evidence for a critical line ending at $\kappa = 0.25$ at large $\beta$. Finite size scaling analysis on lattices $8^2,12^2,16^2, 20^2$ and $24^2$ indicates a continuous transition. The hyperscaling relation is verified in the explored $\beta$ region.