English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49189/83570 (59%)
造訪人次 : 7090578      線上人數 : 74
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27704


    題名: Gauge independent approach to chiral symmetry breaking in a strong magnetic field
    作者: Leung, C. N.;王尚勇;Wang, S. Y.
    貢獻者: 淡江大學物理學系
    關鍵詞: Gauge independence;Chiral symmetry;Magnetic field;Schwinger–Dyson equations;1/N expansion
    日期: 2006-07-17
    上傳時間: 2009-12-31 10:38:38 (UTC+8)
    出版者: Elsevier
    摘要: The gauge independence of the dynamical fermion mass generated through chiral symmetry breaking in QED in a strong, constant external magnetic field is critically examined. We show that the bare vertex approximation, in which the vertex corrections are ignored, is a consistent truncation of the Schwinger–Dyson equations in the lowest Landau level approximation. The dynamical fermion mass, obtained as the solution of the truncated Schwinger–Dyson equations evaluated on the fermion mass shell, is shown to be manifestly gauge independent. By establishing a direct correspondence between the truncated Schwinger–Dyson equations and the 2PI (two-particle-irreducible) effective action truncated at the lowest nontrivial order in the loop expansion as well as in the 1/Nf expansion (Nf is the number of fermion flavors), we argue that in a strong magnetic field the dynamical fermion mass can be reliably calculated in the bare vertex approximation.
    關聯: Nuclear Physics B 747(1-2), pp.266-293
    DOI: 10.1016/j.nuclphysb.2006.04.028
    顯示於類別:[物理學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    0KbUnknown190檢視/開啟
    index.html0KbHTML20檢視/開啟
    index.html館藏資訊0KbHTML10檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋