Dynamical Spontaneous Symmetry Breaking in Quantum Chromodynamics.pdfVIP

Dynamical Spontaneous Symmetry Breaking in Quantum Chromodynamics Heui-Seol Roh∗ Department of Physics, Sung Kyun Kwan University, Suwon 440-746, Republic of Korea (February 1, 2008) The longstanding problems of quantum chromodynamics (QCD) as an SU (3)C gauge theory, the confinement mechanism and Θ vacuum, can be resolved by dynamical spontaneous symmetry break- ing (DSSB), which is essential in generating masses of gauge bosons and hadrons. The confinement mechanism is the result of massive gluons and the Yukawa potential provides hadron formation. The evidences for the breaking of discrete symmetries (C, P, T, CP) during DSSB appear explicitly: baryons and mesons without their parity partners, the conservation of vector current and the partial conservation of the axial vector current, the baryon asymmetry δB ≃ 10−10, and the neutron electric dipole moment Θ ≤ 10−9 . 1 0 PACS numbers: 11.15.Ex, 12.38.-t, 11.15.Tk 2 0 Quantum chromodynamics (QCD) [1] with quarks and L = − 1 µν ¯ µ gs µν ˜ 2 gluons as fundamental constituents is recognized as the QCD 2 TrGµν G + iiγ Dµ i + Θ 16π2 TrG Gµν , n fundamental dynamical theory for strong interactions.