Quantum Electrodynamics in Strong External Fields

强外场中的量子电动力学

• 批准号: 62540211
• 负责人: MINAKATA Hisakazu
• 金额: $ 1.09万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62540211/
• 关键词: QED; Bosonization; Supercritical phase; 電子雲の振動モード; 超強電場; ソリトン・反ソリトン対発生

Based on a new formulation of QED the physics around a hypothetical highly charged nucleus is investigated. Our formalism describes QED in terms of Bose variables and the electron appears as a topological soliton. At Z <greater than or equal> Z_c<similar or equal> 170 the vacuum undergoes the phase transition from the normal to the supercritical ground states. The structure of this transition is elucidated as a first-order phase transition. That is, the process is described as grow of the bubble of the true ground state in the false vacuum. The latent heat is carried away by the bubble wall which is nothing but the spontaneously produced positrons. The ground state of the supercritical vacuum is shown to have a soliton-like structure. The excitations on it is analyzed within the small-fluctuation approximation. New charge-neutral metastable excitations are found. Their energies weakly depend onand takes stable values - 1.6 MeV around the terminate point beyond which the states cease to exist. Near the terminate point the widths of the states are 1 - 10 keV, which are sufficiently narrow to explain GSI e^+e^- peak structure.

基于 QED 的新公式，研究了假设的高电荷核周围的物理现象。我们的形式主义用玻色变量来描述 QED，电子表现为拓扑孤子。在Z<大于或等于>Z_c<相似或等于>170处，真空经历从正常基态到超临界基态的相变。这种转变的结构被解释为一级相变。即，该过程被描述为真基态气泡在假真空中的生长。潜热被气泡壁带走，而气泡壁只不过是自发产生的正电子。超临界真空的基态被证明具有类孤子结构。在小波动近似内分析对其的激励。发现了新的电中性亚稳态激发。它们的能量弱依赖于并取稳定值 - 围绕终止点 1.6 MeV，超过该终止点，状态将不再存在。在终止点附近，态的宽度为 1 - 10 keV，其宽度足以解释 GSI e^+e^- 峰结构。

项目成果

Yumi Hirata; Hisakazu Minakata: "Soliton-Antisoliton Pair Creation in Strong External Fields" Physical Review D (Rapid Communications). 36. 652-655 (1987)

平田由美；

南方久和: 日本物理学会誌. 42. 847-849 (1987)

水上久和：日本物理学会杂志 42. 847-849 (1987)。

Hisakazu Minakata, Hiroshi Nunokawa, and Kiyoshi Shiraishi: "Neutrinos from SN1987A and the C1 Experiment at the Homestake Mine" Physical Review D. 38. 694-697 (1988)

Hisakazu Minakata、Hiroshi Nunokawa 和 Kiyoshi Shiraishi：“来自 SN1987A 的中微子和 Homestake 矿井的 C1 实验”物理评论 D. 38. 694-697 (1988)

H.Minakata.;H.Nunokawa.;K.Shiraishi.: Physical Review D. 38. 694-697 (1988)

H.Minakata.；H.Nunokawa.；K.Shiraishi.：《物理评论》D. 38. 694-697 (1988)

H.Minakata,;H.Munokawa,;K.Shiraishi: Physical Reveiw D. 38. 694-697 (1988)

H.Minakata,;H.Munokawa,;K.Shiraishi：物理评论 D. 38. 694-697 (1988)