| Project/Area Number |
15K05207
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
羽田野 直道 東京大学, 生産技術研究所, 准教授 (70251402)
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| Research Collaborator |
Petrosky Tomio テキサス大学, 上級研究員
Vacchini Bassano ミラノ大学, 准教授
Olivieras Stefano ミラノ大学, 准教授
Guarnieri Giacomo ミラノ大学
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 量子開放系 / スピンーボソン系 / 量子熱流 / back action / 量子記憶効果 / 量子輸送 |
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| Outline of Final Research Achievements |
In this study, we obtained a formula to describe the dynamics of ``information” exchanged between the relevant system and environment in open quantum systems by considering that the energy quantum carry ``information”. The formula enables us to study on the energy flow dynamics, including the concrete process of back action. Applying the obtained formula to the spin-boson system, we clarified the dependence of the quantity of the energy backflow on the temperature of the environment and cut-off frequency of the spectral density of system-environment interaction. The obtained result is published as Physical Review A, Vol. 93 (2016) 012118 (1-10) under collaboration with Dr. Vacchini’s group in Univ. of Milan.
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