This is a demonstration of how the gradient flow allows one to circumvent the fundamental obstacles that prohibit the determination of parton density functions (PDFs) from first principle lattice calculations. It evaluates the PDFs for the pion and shows that they agree with phenomenological extractions.

Using the small-flow-time expansion in the gradient-flow formalism, we use the PCAC relation to obtain the strange and charm quark mass by combining the perturbative results for the matching coefficients of the quark currents with lattice data.

We claim that calculating vacuum expectation values of flowed operators on the lattice and in perturbation theory allows one to derive the quark masses in the MS scheme. Here we provide the required perturbative results.

This is one of the results of my collaboration with philosophers. We define a scheme which helps to classify physical principles. We claim that they match a specific pattern, from their pre-history to the elevation to a principle, to a certain degree of formalization, generalization, and challenge.

We study the effect of a certain class of higher-dimensional operators, as they may be induced by physics beyond the Standard Model, on the associated production of a Higgs and a W boson.