Charged and neutral vector rho mesons in a magnetic field

	Charged and neutral vector rho mesons in a magnetic field
	Liu H(刘好); Yu L(余浪); Huang M(黄梅); Liu, H; Yu, L; Huang, M
刊名	PHYSICAL REVIEW D
	2015
卷号	91 期号:1 页码:14017
通讯作者	刘好 ; 余浪 ; 黄梅
英文摘要	The vector meson rho in the presence of an external magnetic field has been investigated in the framework of the Nambu-Jona-Lasinio model, in which mesons are constructed by the infinite sum of quark-loop chains by using random phase approximation. The quark loop of rho meson polarization function is calculated to the leading order of 1/N-c expansion by taking the quark propagator in Ritus form as well the Landau level representation. It is found that the constituent quark mass increases with magnetic field, the masses of the neutral vector meson rho(0) with spin component s(z) = 0, +/- 1, and the charged vector meson rho(+/-) with s(z) = 0 also increases with magnetic field. However, the mass square of the charged vector meson rho(+) (rho(-)) with s(z) = +1 (s(z) = -1) decreases linearly with magnetic field and drops to zero at the critical magnetic field eB(c) similar or equal to 0.2 GeV2, which indicates the possible condensation of a charged vector meson in the vacuum. The value of the critical magnetic field is the same by using the Ritus quark propagator as well the Landau level representation of the quark propagator, which is much lower than the value eB(c) similar or equal to 0.6 GeV2 predicted by a pointlike vector meson.
学科主题	Astronomy & Astrophysics; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别	SCI ; CA
WOS记录号	WOS:000351950100002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228384]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Liu H,Yu L,Huang M,et al. Charged and neutral vector rho mesons in a magnetic field[J]. PHYSICAL REVIEW D,2015,91(1):14017.
APA	刘好,余浪,黄梅,Liu, H,Yu, L,&Huang, M.(2015).Charged and neutral vector rho mesons in a magnetic field.PHYSICAL REVIEW D,91(1),14017.
MLA	刘好,et al."Charged and neutral vector rho mesons in a magnetic field".PHYSICAL REVIEW D 91.1(2015):14017.