Weighted Lorentz invariant measures as quantum field theory regulators

TL;DR

This paper introduces a reformulation of quantum field theory using weighted Lorentz invariant measures, which regularizes divergences and yields finite physical quantities without relying on string theory, impacting fundamental physics issues.

Contribution

It develops a generalized quantum field theory framework with Lorentz invariant measures that regularizes divergences and enables construction of noncommutative theories, without string theory assumptions.

Findings

Finite vacuum expectation values for energy without normal ordering

Finite short-distance field commutators and fluctuations

Construction of an infinite family of noncommutative field theories

Abstract

In this work we develop a re-formulation of quantum field theory through the more general weighted Lorentz invariant measures that the definition of quantum fields allows; this approach provides finite answers for the long-live problems of the traditional formulations of quantum field theories, namely, smooth distributions for the field commutators that are finite a short distances, finite vacuum expectation values for the energy (without invoking normal ordering of operators), and finite fluctuations for the field operators. Our construction is based on a critical point of view on conventional quantum field theory statements, instead of invoking string theory inspired frameworks, since they are not necessary. We shall show that the conventional scheme for constructing quantum field theories has the necessary ingredients for obtaining generalized versions that, respecting the Lorentz symmetry, allows us to cure some of the divergences that plague the different formulations, particularly the ultra-violet divergences; additionally the present scheme will allows us to construct an infinite family of noncommutative field theories that are compared with other formulations. At the end, we discuss the impact of our formulation on particle physics numerology and on the cosmological constant problem