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arXiv · 2502.04092

Absence of CP Violation in the Strong Interaction: Vacuum thwarts Axion

Gerrit Schierholz
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Abstract

QCD admits a contribution to the action, the $θ$ term, which potentially gives rise to nontrivial phases and violates CP. This is essentially a question of how the vacuum reacts to the $θ$ term. In this talk I will address the problem using new developments on the lattice. The overall solution is contrasted with the axion `solution'.

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Gerrit Schierholz. 2025-02-06. Absence of CP Violation in the Strong Interaction: Vacuum thwarts Axion. https://arxiv.org/abs/2502.04092

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