1
|
Schierholz G. Dynamical solution of the strong CP problem within QCD? EPJ WEB OF CONFERENCES 2022. [DOI: 10.1051/epjconf/202227401009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The strong CP problem is inseparably connected with the topology of gauge fields and the mechanism of color confinement, which requires nonperturbative tools to solve it. In this talk I present results of a recent lattice investigation of QCD with the θ term in collaboration with Yoshifumi Nakamura [1, 2]. The tool we are using to address the nonperturbative properties of the theory is the gradient flow, which is a particular realization of momentum space RG transformations. The novel result is that within QCD the vacuum angle θ is renormalized, together with the strong coupling constant, and flows to θ = 0 in the infrared limit. This means that CP is conserved by the strong interactions.
Collapse
|
2
|
Millo R, Faccioli P. Computing the effective Hamiltonian of low-energy vacuum gauge fields. Int J Clin Exp Med 2011. [DOI: 10.1103/physrevd.84.034504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
3
|
He S, Huang M, Yan QS. Pseudoscalar glueball in a chiral Lagrangian model with instanton effect. Int J Clin Exp Med 2010. [DOI: 10.1103/physrevd.81.014003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
4
|
|
5
|
Schäfer T, Shuryak EV. Interacting instanton liquid in QCD at zero and finite temperatures. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1996; 53:6522-6542. [PMID: 10019934 DOI: 10.1103/physrevd.53.6522] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|