Aspects of the QCD -vacuum

doi:10.1007/JHEP06(2019)106

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	Aspects of the QCD -vacuum
	Vonk, T ; Guo, FK ; Meissner, UG
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2019
期号	6 页码:106
关键词	CHIRAL PERTURBATION-THEORY SU(N) GAUGE-THEORIES LARGE-N LIMIT U(1)
ISSN号	1029-8479
DOI	10.1007/JHEP06(2019)106
英文摘要	This paper addresses two aspects concerning the -vacuum of Quantum Chro-modynamics. First, large-N-c chiral perturbation theory is used to calculate the first two non-trivial cumulants of the distribution of the winding number, i.e. the topological susceptibility, (top), and the fourth cumulant, c(4), up to next-to-leading order. Their large-N-c scaling is discussed, and compared to lattice results. It is found that in the literature. Second, we discuss the properties of QCD at approximate to using chiral perturbation theory for the case of 2 + 1 light flavors, i.e. by taking the strange quark mass heavier than the degenerate up and down quark masses. It is shown that in accordance with previous findings for N-f = 2 and N-f = 3 mass-degenerate flavors in the region approximate to two vacuum states coexist, which become degenerate at = . The wall tension of the energy barrier between these degenerate vacua is determined as well as the decay rate of a false vacuum.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23405]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Meissner, Ulf-G.] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.[Meissner, Ulf-G.] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany 5.[Meissner, Ulf-G.] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany 6.[Meissner, Ulf-G.] Tbilisi State Univ, GE-0186 Tbilisi, Georgia 7.[Vonk, Thomas 8.Meissner, Ulf-G.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
推荐引用方式 GB/T 7714	Vonk, T,Guo, FK,Meissner, UG. Aspects of the QCD -vacuum[J]. JOURNAL OF HIGH ENERGY PHYSICS,2019(6):106.
APA	Vonk, T,Guo, FK,&Meissner, UG.(2019).Aspects of the QCD -vacuum.JOURNAL OF HIGH ENERGY PHYSICS(6),106.
MLA	Vonk, T,et al."Aspects of the QCD -vacuum".JOURNAL OF HIGH ENERGY PHYSICS .6(2019):106.