Taming NSPT fluctuations in $O(N)$ Non-Linear Sigma Model: simulations
in the large $N$ regime
Taming NSPT fluctuations in $O(N)$ Non-Linear Sigma Model: simulations
in the large $N$ regime
The Non-Linear Sigma Model (NLSM) is an example of a field theory on a target space exhibiting intricate geometry. One remarkable characteristic of the NLSM is asymptotic freedom, which triggers interest in perturbative calculations. In the lattice formulation of NLSM, one would naturally rely on Numerical Stochastic Perturbation Theory (NSPT) …