We simulate a theory with $N_f=2$ heavy quarks of mass $M$. At energies much smaller than $M$ the heavy quarks decouple and the theory can be described by an effective theory which is a pure gauge theory to leading order in $1/M$. We present results for the mass dependence of ratios such as $t_0(M)/t_0(0)$. We compute these ratios from simulations and compare them to the perturbative prediction. The latter relies on a factorisation formula for the ratios which is valid to leading order in $1/M$.
展开▼
机译：我们用质量为$ M $的重夸克模拟$ N_f = 2 $的理论。当能量远小于$ M $时，重夸克就会解耦，并且该理论可以用有效理论来描述，该理论是纯粹的量规理论，可以领先$ 1 / M $的阶数。我们提出了与质量相关的比率结果，例如$ t_0（M）/ t_0（0）$。我们通过模拟计算这些比率，并将其与微扰预测进行比较。后者依赖于因数分解公式，该比率对于$ 1 / M $的领先订单有效。
展开▼
