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Topological Solitons and Non-perturbative Effects in Field Theory

场论中的拓扑孤子和非微扰效应

基本信息

批准号：
16F16322
负责人：
新田宗土
金额：
$ 1.41万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2016
资助国家：
日本
起止时间：
2016-11-07 至 2019-03-31
项目状态：
已结题

项目摘要

Quark-hadron continuity was proposed as crossover between hadronic matter and quark matter without a phase transition, based on the matching of the symmetry and excitations in both phases. In the simplest case, it connects hyperon matter and the color-flavor-locked (CFL) phase exhibiting color superconductivity. Recently, it was suggested that one hadronic superfluid vortex in hyperon matter could be connected to one non-Abelian vortex (color magnetic flux tube) in the CFL phase. On contrary to their proposal, we showed that three hadronic superfluid vortices must combine with three non-Abelian vortices with different colors with the total color magnetic fluxes canceled out, where the junction is called a colorful boojum.We discussed the effect of a strong magnetic field on neutron 3P2 superfluidity. We derived the Ginzburg-Landau equation in the path-integral formalism up to the next-to-leading order in the expansion of the magnetic field B. We determined the (T,B) phase diagram with temperature T, comprising three phases: the uniaxial nematic (UN) phase for B=0, D2-biaxial nematic (BN) and D4-BN phases in finite B and strong B such as magnetars, respectively, where D2 and D4 are dihedral groups. We presented the thermodynamic properties, such as heat capacities and spin susceptibility, and found that the spin susceptibility exhibits anisotropies in the UN, D2-BN, and D4-BN phases.

夸克-强子连续性是基于强子物质和夸克物质的对称性和激发相的匹配，提出的一种没有相变的强子物质和夸克物质之间的交叉。在最简单的情况下，它连接超子物质和呈现色超导性的色味锁定（CFL）相。最近，有人提出超子物质中的一个强子超流涡旋可以与CFL相中的一个非阿贝尔涡旋（色磁通管）相连接。与他们的设想相反，我们证明了三个强子超流涡旋必须与三个不同颜色的非阿贝尔涡旋联合收割机相结合，且总的色磁通量被抵消，这种结合称为色boojum，并讨论了强磁场对中子3 P2超流性的影响.我们导出了在磁场B展开下的次领先阶的路径积分形式的Ginzburg-Landau方程。我们确定了温度为T的（T，B）相图，包括三个相：B=0时的单轴双晶（UN）相，有限B和强B如磁星中的D2-双轴双晶（BN）相和D4-BN相，其中D2和D4为二面体群。我们给出了它们的热力学性质，如热容和自旋磁化率，发现自旋磁化率在UN，D2-BN和D4-BN相中表现出各向异性。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Phase structure of neutron P23 superfluids in strong magnetic fields in neutron stars

中子星强磁场中中子P23超流体的相结构

DOI：
10.1103/physrevc.99.035213
发表时间：
2019
期刊：
Physical Review C
影响因子：
3.1
作者：
Yasui Shigehiro;Chatterjee Chandrasekhar;Nitta Muneto
通讯作者：
Nitta Muneto

Superfluid Vortices in the Core of the Neutron Stars

中子星核心的超流体涡旋

DOI：
发表时间：
2018
期刊：
影响因子：
0
作者：
安井繁宏;Chandrasekhar Chatterjee;新田宗土;Chandrasekhar Chatterjee;Chandrasekhar Chatterjee;Chandrasekhar Chatterjee;Chandrasekhar Chatterjee
通讯作者：
Chandrasekhar Chatterjee

University of Massachusetts(U.S.A.)

马萨诸塞大学（美国）