| Project/Area Number |
16K17774
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
WATABE Shohei 東京理科大学, 理学部第一部物理学科, 助教 (90726895)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | Bose-Einstein凝縮 / 多体効果 / 多自由度効果 / 有限温度効果 / ボース・アインシュタイン凝縮 / 量子エレクトロニクス / 物性基礎論 / 物性理論 / 低温物性 |
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| Outline of Final Research Achievements |
We discussed many-body effect and effect of internal degrees of freedom on a single-particle excitation as well as a collective excitation in a Bose-Einstein condensate. We studied the correspondence between the single-particle excitation and the collective excitation at non-zero temperature, which is believed to be characteristic to the Bose-Einstein condensate, and we also found a satellite peak in the single-particle excitation originated from the multi-particle excitation in the Bose-Einstein condensate. For a multi-component Bose-Einstein condensate, we also derive the Ward-Takahashi identity in the case of explicitly broken symmetry.
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