Fermionic observables in Numerical Stochastic Perturbation Theory
V. Miccio, F. Di Renzo, A. Mantovi, C. Torrero, L. Scorzato
TL;DR
This paper details the computational techniques for fermionic observables in Numerical Stochastic Perturbation Theory, focusing on operator construction, divergence subtraction, and continuum limit extraction.
Contribution
It introduces a systematic approach for calculating fermionic observables in NSPT, including handling divergences and irrelevant contributions.
Findings
Effective methods for constructing composite operators from the inverse Dirac operator.
Procedures for subtracting UV divergences in fermionic observable computations.
Strategies for accurately extracting the continuum limit from lattice data.
Abstract
We present technical details of fermionic observables computations in NSPT. In particular we discuss the construction of composite operators starting from the inverse Dirac operator building block, the subtraction of UV divergences and the treatment of irrelevant contributions in extracting the continuum limit.
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Taxonomy
TopicsStochastic processes and financial applications · Quantum Mechanics and Applications · Spectral Theory in Mathematical Physics