A novel realization of the classical SU(2) algebra is introduced for the Dirac relativistic hydrogen atom defining a set of operators that allow the factorization of the problem. An extra phase is needed as a new variable ...

With the help of quantum-scattering-theory methods and the approximation of the stationary phase, we propose a one-dimensional quantum-random-walk (QRW) model, which describes for both tunneling and scattering above the ...

We address the question of why the translation from nucleic acids to protein forming amino acids is carried out by triplets known as codons. We approach this problem from a dynamical point of view by considering the ...

The new type of reflection principle applicable to the Laplace transform of the arrival probability for biased walks developed by Khantha and Balakrishnan is extended to the cases of biased correlated walks with absorbing ...

A new formula for the Seebeck coefficient S is obtained: S = (21n2/3)(qn)(-1 epsilon)(F)k(B) x (N/V), where q, n, epsilon(F), N and V are, respectively, charge, carrier density, Fermi energy, density of states at epsilon(F) ...