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  • Studies From D.B. Saakian And Colleagues Yield New Information About

    STUDIES FROM D.B. SAAKIAN AND COLLEAGUES YIELD NEW INFORMATION ABOUT PHYSICS

    Science Letter
    June 16, 2009

    According to a study from Yerevan, Armenia, "Using methods of
    statistical physics, we present rigorous theoretical calculations
    of Eigen's quasispecies theory with the truncated fitness landscape
    which dramatically limits the available sequence space of information
    carriers. As the mutation rate is increased from small values to large
    values, one can observe three phases: the first (I) selective (also
    known as ferromagnetic) phase, the second (II) intermediate phase
    with some residual order, and the third (III) completely randomized
    (also known as paramagnetic) phase."

    "We calculate the phase diagram for these phases and the concentration
    of information carriers in the master sequence (also known as peak
    configuration) x(0) and other classes of information carriers. As
    the phase point moves across the boundary between phase I and phase
    II, x(0) changes continuously; as the phase point moves across the
    boundary between phase II and phase III, x(0) has a large change,"
    wrote D.B. Saakian and colleagues (see also Physics).

    The researchers concluded: "Our results are applicable for the general
    case of a fitness landscape."

    Saakian and colleagues published the results of their research in
    Physical Review E (Phase diagram for the Eigen quasispecies theory
    with a truncated fitness landscape. Physical Review E, 2009;79(4
    Part 1):1905).

    For additional information, contact D.B. Saakian, Yerevan Physics
    Institute, Alikhanian Bros St. 2, Yerevan 375036, Armenia.

    The publisher of the journal Physical Review E can be contacted
    at: American Physical Society, One Physics Ellipse, College Pk,
    MD 20740-3844, USA.
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