Phase transition in the bounded one-dimensional multitrap system.
We have previously discussed the diffusion limited problem of the bounded one-dimensional multitrap system where no external field is present, and pay special attention to the transmission of the diffusing particles through the imperfect traps. We discuss here the case in which an external field is included to each trap and find not only the transmission but also the energy associated with the diffusing particles in the presence and absence of such a field. From the energy we find the specific heat C(h) and show that for certain values of the parameters associated with the multitrap system it behaves in a manner which is suggestive of phase transition. Moreover, this phase transition is demonstrated not only through the conventional single peak at which the specific heat function is undifferentiable but also through the less frequent phenomenon of double peaks.
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Department of Physics, Bar Ilan University, Ramat Gan, Israel.