Investigation of the phase structure and excited modes under extremum environment in the strong intaraction

强内陷极值环境下的相结构和激发模式研究

• 批准号: 23540311
• 负责人: TSUE Yasuhiko
• 金额: $ 2.83万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540311/
• 关键词: 高密度クォーク物質; QCD物性; クォーク物質; フェルミオン多体系; クォーク強磁性; 相転移; 極限環境; クォーク・ハドロン; グルオン多体系

In the strong interaction governed by the quantum chromodynamics (QCD), it has been shown that the quark-spin polarization is realized at high baryon density by using the Nambu-Jana-Lasinio (NJL) model with the tensor-type four-point interaction between quarks. As the quark-number density is increasing, the spin-polarization occurs. Then, the two-flavor color superconductivity disappears. By using the extended NJL model which incorporates the eight-point interaction between quarks, it has been shown that there exists a new phase in this model in which the chiral symmetry recovers but the elementary excitation on the vacuum corresponds to nucleon. For the pure Yang-Mills gauge theory, the time-dependent variational method has been constructed within the Gaussian functional approximation. The scalar and pseudo scalar glueball masses have been given and the dependence of glueball masses on the QCD running coupling constant and QCD scale parameter has been clarified.

在量子色动力学（QCD）控制的强相互作用中，利用夸克间张量型四点相互作用的Nambu-Jana-Lasinio（NJL）模型，证明了在重子密度较高时夸克自旋极化是可以实现的。随着夸克数密度的增加，自旋极化发生。然后，双味色超导性消失。本文利用引入夸克八点相互作用的扩展NJL模型，证明了在这个模型中存在一个新相，在这个相中手征对称性恢复，而真空上的元激发对应于核子。对于纯Yang-Mills规范理论，在高斯泛函近似下构造了含时变分方法。给出了胶球的标量和赝标量质量，并阐明了胶球质量与QCD运转耦合常数和QCD标度参数的关系。

项目成果

On the Color-Singlet States in Many-Quark Model with the su(4)-Algebraic Structure. II

具有su(4)-代数结构的多夸克模型中的颜色单线态。

• DOI: 10.1143/ptp.126.293
• 发表时间: 2011
• 期刊: Progress of Theoretical Physics
• 作者: Y. Tsue;C. Providencia;J. da Providencia and M. Yamamura
• 通讯作者: J. da Providencia and M. Yamamura

On the Color-Singlet States in Many-Quark Model with the su(4)-Algebraic Structure.III --Transition from the Quark-Triplet to the Quark-Pair Phase ---

关于su(4)-代数结构多夸克模型中的颜色单线态III --从夸克三重态到夸克对相的转变---

• DOI: 10.1143/ptp.126.313
• 发表时间: 2011
• 期刊: Progress of Theoretical Physics
• 作者: Y. Tsue;C. Providencia;J. da Providencia and M. Yamamura
• 通讯作者: J. da Providencia and M. Yamamura

A Role of the Quasiparticle in the Conservation of the Fermion Number--- An Example Illustrative of the Deformation of the Cooper Pair ---

准粒子在费米子数守恒中的作用---库珀对变形的示例说明---

• DOI: 10.1143/ptp.128.717
• 发表时间: 2012
• 期刊: Progress of Theoretical Physics
• 作者: Y. Tsue;C. Providencia;J. da Providencia and M. Yamamura
• 通讯作者: J. da Providencia and M. Yamamura

Note on the Minimum Weight States in the su(2)-Algebraic Many-Fermion Model --- Extension of the Role of the Auxiliary su(2)-Algebra ---

关于su(2)-代数多费米子模型中最小权状态的注记 --- 辅助su(2)-代数作用的扩展 ---

• 发表时间: 2012
• 期刊: Progress of Theoretical Physics
• 作者: Y. Tsue;C. Providencia;J. da Providencia and M. Yamamura
• 通讯作者: J. da Providencia and M. Yamamura

非一様相における低エネルギー有効理論

非均匀状态下的低能有效理论

• 发表时间: 2013
• 作者: 李東奎;仲野英司;津江保彦;巽敏隆;丸山敏毅
• 通讯作者: 丸山敏毅