Energy Storage in a Hamiltonian System in Partial Contact with a Heat Bath

Abstract

To understand the mechanism allowing for the long-term storage of excess energy in proteins, we study a Hamiltonian system consisting of several coupled pendula in partial contact with a heat bath. It is found that energy storage is possible when the motion of each pendulum switches between oscillatory (vibrational) and rotational (phase-slip) modes. The storage time increases almost exponentially to the square root of the injected energy. The relevance of our mechanism to protein motors is discussed.

8 pages, 4 figures, to appear in J.Phys.Soc.Jpn

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