Nonequilibrium thermodynamics for fluctuations of biopolymers
| Project/Area Number |
19540392
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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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 | Ibaraki University |
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Principal Investigator |
NAKAGAWA Naoko Ibaraki University, 理学部, 准教授 (60311586)
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| Project Period (FY) |
2007 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 統計物理学 / 非平衡・非線形物理学 / 非平衡定常系 / クラウジウス関係式 / エントロピー / 熱と仕事の相関 / 揺らぎ / タンパク質 / 折りたたみ転移 / 4点相関関数 / 熱力学第二法則 / 過剰熱 / 熱力学関数 / 統計力学 / inherent structures / 分布関数 / エントロピー生成 / 局所詳細釣り合い / ボルツマン因子 / 軌道平均 |
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| Research Abstract |
Aiming at the construction of the formulation to describe the working mechanism of biopolymers, we study nonequilibrium steady states analytically. We obtain a concise expression for the probability distribution function correct up to the second order of the degree of nonequilibrium. From this expression, we arrive at a naturally extended Clausius relation to nonequilibrium. We next extend the relation to the second order of the degree of nonequilibrium and find that we should include a twist term, which especially appears in nonlinear nonequilibrium. From a different point of view to examine proteins' dynamics, we study slow fluctuations in a protein model and characterize them by a four-point correlation-functions.
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Report
(6 results)
Research Products
(32 results)
