Metastable vacuum decay and θ dependence in gauge theory. Deformed QCD as a toy model

• Published in: Nuclear physics. B Vol. 890; pp. 30 - 47
• Main Authors: Bhoonah, Amit, Thomas, Evan, Zhitnitsky, Ariel R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2015; Elsevier

We study a number of different ingredients related to the θ dependence, metastable excited vacuum states and other related subjects using a simplified version of QCD, the so-called “deformed QCD”. This model is a weakly coupled gauge theory, which, however, preserves all the relevant essential eleme...