2010 Fiscal Year Final Research Report
Quantum and classical behavior of fluctuation observed in light scattering
| Project/Area Number |
20340076
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Osaka University |
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Principal Investigator |
WATANABE Junji Osaka University, 大学院・生命機能研究科, 准教授 (60201191)
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| Co-Investigator(Kenkyū-buntansha) |
KINOSHITA Shuichi 大阪大学, 大学院・生命機能研究科, 教授 (10112004)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 光散乱 / ゆらぎ / 量子性 / 古典性 / ストークス散乱 / 反ストークス散乱 |
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| Research Abstract |
We measured the Stokes to anti-Stokes intensity ratio in the phonon Raman spectrum of a rutile (TiO2) crystal. We found that although the ratio still equals the Boltzmann factor at the center frequency of a mode, it deviates from the Boltzmann factor and approaches a constant value at the center frequency within the spectrally-broadened region. It is suggested that irreversible dissipation is essential to understanding this deviation and the broadening of the phonon mode.
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