Abstract.
We performed a theoretical study of the specific heat C(T) as a function of the temperature for double-strand quasiperiodic sequences. To mimic DNA molecules, the sequences are made up from the nucleotides guanine G, adenine A, cytosine C and thymine T, arranged according to the Fibonacci and Rudin-Shapiro quasiperiodic sequences. The energy spectra are calculated using the two-dimensional Schrödinger equation, in a tight-binding approximation, with the on-site energy exhibiting long-range disorder and non-random hopping amplitudes. We compare the specific heat features of these quasiperiodic artificial sequences to the spectra considering a segment of the first sequenced human chromosome 22 (Ch22), a real genomic DNA sequence.
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Moreira, D., Albuquerque, E. & Bezerra, C. Specific heat spectra for quasiperiodic ladder sequences. Eur. Phys. J. B 54, 393–398 (2006). https://doi.org/10.1140/epjb/e2007-00001-3
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DOI: https://doi.org/10.1140/epjb/e2007-00001-3