
(Seminar) Vacuum structure and origin of color confinement in QCD 
20191128
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CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title
题目

Vacuum structure and origin of color confinement in QCD 

Speaker
报告人


Affiliation
所在单位

Uzbekistan National University, PIFI fellowship(中科院国际人才计划) 
Date
日期

3:30 pm, Nov. 28 (Thu) 
Venue
地点

ITP South Building 6620

Abstract
摘要

A longstanding problem of explicit microscopic description of a stable vacuum in a pure SU(3) quantum chromodynamics (QCD) is resolved on a basis of stationary solutions possessing local quantum stability against vacuum gluon fluctuations. A space of such solutions is factorized into two gauge and Lorentz invariant subspaces corresponding to nonAbelian color magnetic and electric type fields respectively. Each subspace contains solutions which represent fixed points under the action of the Weyl color group. Such a symmetry allows to define classical colorless gauge potentials and a space of color singlet oneparticle quantum states. We show that the the origin of color confinement phenomenon or spontaneous symmetry breaking is encoded in the structure of the gauge group SU(N). The Weyl symmetric solutions manifest an Abelian dominance phenomenon in the vacuum structure and provides a consistent classification of physical states, i.e., pure glueballs. As an example, we construct a spectrum of lightest scalar glueballs. Implications in quantum gravity are discussed.

Contact Person
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