Quantum Corrections in Classicalon Theories
Petros Asimakis, Nikolaos Brouzakis, Aris Katsis, Nikolaos Tetradis
TL;DR
This paper employs the heat kernel method to analyze quantum corrections in classicalon theories, revealing suppressed UV divergences and drawing parallels with Galileon theories' Vainshtein mechanism.
Contribution
It provides a novel calculation of one-loop effective actions in classicalon backgrounds, highlighting UV divergence suppression and its analogy with Galileon theories.
Findings
UV divergences are suppressed inside classicalons.
Quantum fluctuations are reduced similarly to Galileon theories.
Classicalon and Galileon theories exhibit decreased UV sensitivity.
Abstract
We use the heat kernel in order to compute the one-loop effective action on a classicalon background. We find that the UV divergences are suppressed relative to the predictions of standard perturbation theory in the interior of the classicalon. There is a strong analogy with the suppression of quantum fluctuations in Galileon theories, within the regions where the Vainshtein mechanism operates (discussed in arXiv:1401.2775). Both classicalon and Galileon theories display reduced UV sensitivity on certain backgrounds.
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