期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 12, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP12(2017)145
关键词
1/N Expansion; Field Theories in Lower Dimensions; Sigma Models
资金
- Ministry of Education, Culture, Sports, Science (MEXT)-Supported Program for the Strategic Research Foundation at Private Universities 'Topological Science' [S1511006]
- Japan Society for the Promotion of Science (JSPS) [16H03984]
- MEXT of Japan [15H05855]
- Grants-in-Aid for Scientific Research [15H05855, 16H03984] Funding Source: KAKEN
We give, for the first time, self-consistent large-N analytical solutions of inhomogeneous condensates in the quantum CPN-1 model in the large-N limit. We find a map from a set of gap equations of the CPN-1 model to those of the Gross-Neveu (GN) model (or the gap equation and the Bogoliubov-de Gennes equation), which enables us to find the self-consistent solutions. We find that the Higgs field of the CPN-1 model is given as a zero mode of solutions of the GN model, and consequently only topologically nontrivial solutions of the GN model yield nontrivial solutions of the CPN-1 model. A stable single soliton is constructed from an anti-kink of the GN model and has a broken (Higgs) phase inside its core, in which CPN-1 modes are localized, with a symmetric (con fi ning) phase outside. We further find a stable periodic soliton lattice constructed from a real kink crystal in the GN model, while the Ablowitz-Kaup-Newell-Segur hierarchy yields multiple solitons at arbitrary separations.
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