Complex action theory and the naturalness problem in inflationary cosmology

复杂作用理论和暴胀宇宙学中的自然性问题

• 批准号: 21K03381
• 负责人: 永尾 敬一
• 金额: $ 2.66万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2026-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K03381/
• 关键词: 量子基礎論; 素粒子論; 宇宙論

私はHolger Bech Nielsen氏と複素作用理論の周期的宇宙模型で最大化原理を適用し、経路積分の観点から周期が自発的に選ばれることを示した[Reality from maximizing overlap in the periodic complex action theory, Keiichi Nagao, Holger Bech Nielsen, PTEP 091B01, pp.1-11(2022)]。また、研究発表を行った[Reality from maximizing overlap in the periodic complex action theory, Keiichi Nagao, Joint Theory Seminar at Niels Bohr Institute, 13 Oct. 2022]。そして、未来を含む複素作用理論は、初期条件を与え得るということを議論した[What gives a “theory of Initial Conditions”?, Holger Bech Nielsen, Keiichi Nagao, Proc. Bled 2022: What Comes Beyond the Standard Models, pp.236-247(2022)]。さらに、過去と未来の混合状態を記述できるような歪んだ密度演算子を導入し、以前に我々が純粋状態に対して提唱したエルミートなハミルトニアンが自動的に得られる機構が混合状態に対しても適用できることを示した[Automatic hermiticity for mixed states, Keiichi Nagao, Holger Bech Nielsen, arXiv:2209.11619 [hep-th],PTEP 031B01, pp.1-11(2023)]。

Holger Bech Nielsen's Periodic Cosmic Model of Complex Action Theory, Reality from Maximizing Overlap in the Periodic Complex Action Theory, Keiichi Nagao, Holger Bech Nielsen, PTEP 091B01, pp. 1 -11(2022) [Reality from maximizing overlap in the periodic complex action theory, Keiichi Nagao, Joint Theory Seminar at Niels Bohr Institute, 13 October 2022]. [What gives a "theory of Initial Conditions"?, Holger Bech Nielsen, Keiichi Nagao, Proc. Bled 2022: What Comes Beyond the Standard Models, pp.236-247(2022)]。In addition, the description of mixed states of the past and the future shows that the density operator is introduced into the pure state, and the former indicates that the mechanism is automatically obtained from the mixed state [Automatic hermiticity for mixed states, Keiichi Nagao, Holger Bech Nielsen, arXiv:2209.11619 [hep-th],PTEP 031B01, pp. 1 -11(2023)].

项目成果

Niels Bohr Institute(デンマーク)

尼尔斯玻尔研究所（丹麦）

Reality from maximizing overlap in the periodic complex action theory

周期性复杂作用理论中最大化重叠的现实

• DOI: 10.1093/ptep/ptac102
• 发表时间: 2022
• 期刊: Progress of Theoretical and Experimental Physics
• 影响因子: 3.5
• 作者: Keiichi Nagao;Holger Bech Nielsen
• 通讯作者: Holger Bech Nielsen

What gives a “theory of Initial Conditions” ?

什么给出了“初始条件理论”？

• 发表时间: 2022
• 期刊: Proceedings to Bled Workshops in Physics
• 作者: Keiichi Nagao;Holger Bech Nielsen
• 通讯作者: Holger Bech Nielsen

Automatic hermiticity for mixed states

混合态的自动隐秘性

• DOI: 10.1093/ptep/ptad025
• 发表时间: 2023
• 期刊: Progress of Theoretical and Experimental Physics
• 影响因子: 3.5
• 作者: Keiichi Nagao;Holger Bech Nielsen
• 通讯作者: Holger Bech Nielsen