Publications by Sander Johannes Nicolaas Mooij

Effective potential in finite formulation of QFT

Sander Johannes Nicolaas Mooij, Mikhail Chapochnikov

In recent works [1,2], we have shown how n-point correlation functions in perturbative QFT can be computed without running into intermediate divergences. Here we want to illustrate explicitly that one can calculate the quantum effective potential by the sa ...

2024

QFT without infinities and hierarchy problem

Sander Johannes Nicolaas Mooij, Mikhail Chapochnikov

The standard way to do computations in Quantum Field Theory (QFT) often results in the requirement of dramatic cancellations between contributions induced by a "heavy" sector into the physical observables of the "light" (or low energy) sector - the phenome ...

ELSEVIER2023

Finite Callan-Symanzik renormalisation for multiple scalar fields

Sander Johannes Nicolaas Mooij, Mikhail Chapochnikov

We study a finite, divergence-free approach to renormalisation originally proposed in the early '70s by Blaer and Young, and Callan. It is based on equations similar to the Callan-Symanzik equations and introduced in the context of the & lambda;& phi;4 the ...

ELSEVIER2023

Hidden and explicit quantum scale invariance

Sander Johannes Nicolaas Mooij, Mikhail Chapochnikov, Thibault Voumard

There exist renormalization schemes that explicitly preserve the scale invariance of a theory at the quantum level. Imposing a scale-invariant renormalization breaks renormalizability and induces new nontrivial operators in the theory. In this work, we stu ...

American Physical Society2019

Sander Johannes Nicolaas Mooij

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Effective potential in finite formulation of QFT

QFT without infinities and hierarchy problem

Finite Callan-Symanzik renormalisation for multiple scalar fields

Hidden and explicit quantum scale invariance

A generalized non-Gaussian consistency relation for single field inflation

Unitarity and predictiveness in new Higgs inflation

Vanishing of local non-Gaussianity in canonical single field inflation

Effective potential in finite formulation of QFT

QFT without infinities and hierarchy problem

Finite Callan-Symanzik renormalisation for multiple scalar fields

Hidden and explicit quantum scale invariance

A generalized non-Gaussian consistency relation for single field inflation

Unitarity and predictiveness in new Higgs inflation

Vanishing of local non-Gaussianity in canonical single field inflation