##### A Proof of the Axion?
We show that the de Sitter quantum breaking bound when applied to QCD exposes the necessity of the axion solution to the strong CP problem. The Peccei-Quinn mechanism emerges as a consistency requirement independent of the naturalness questions. The $\theta$-angle must be unphysical rather than simply small. All other approaches including a fine-tuning of $\theta$ lead to the existence of de Sitter vacua and are excluded by consistency.
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###### Tweets
TM_Eubanks: RT @DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
thermotronica: RT @DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
JosephHucks: RT @DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
HarryKeizer: RT @DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
skdh: RT @DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
DMHunters: ⟨arxiv:1811.03079⟩ A Proof of the Axion? https://t.co/hNt4EgaCxz #Axions #DarkMatter #Naturalness #HepTh
hep_th: [1811.03079] Gia Dvali, Cesar Gomez, Sebastian Zell : A Proof of the Axion? https://t.co/cFzbWE0gjy
marianojavierd1: RT @ReadDark: This looks to be quite interesting! "A proof of the axion?" :: https://t.co/H5ecaKTIzT
michelle_lmc: RT @ReadDark: This looks to be quite interesting! "A proof of the axion?" :: https://t.co/H5ecaKTIzT
ReadDark: This looks to be quite interesting! "A proof of the axion?" :: https://t.co/H5ecaKTIzT
qraal: [1811.03079] A Proof of the Axion? https://t.co/n0TbZhkEnz