This note introduces an entirely new and original and ab initio theory of the relativistic H atom, using the lagrangian (1) of ECE2 relativity and three Euler Lagrange equations (14) to (16) which can be solved simultaneously using numerical methods such as the Runge Kutta methods of Maxima as developed by co author Horst Eckardt. The wavefunction is found by solving Eqs. (9) to (11) simultaneously, in general it is psi = psi(t, r, theta, phi). The energy levels are found from Eq. (7). This is much simpler than the traditional hamiltonain method (17) to (23). The usual development is to write the lagrangian for the Dirac equation using the Dirac matrices and Dirac wavefunction. In papers such as UFT172 to UFT177 (all classics by now) the Dirac equation is developed into the fermion equation. In the new method of this note the wavefunction is found in O(3) space, and not the SU(2) space of the fermion equation (chiral Dirac equation). The basic method described here for H can be extended to other atoms and molecules given the mainframes and supercomputers used routinely in computational quantum chemistry. Contemporary supercomputers are far more powerful than the IBM 3096 / LCAP system which I helped pioneer at IBM Kingston, Cornell, Zurich and ETH in the eighties. The desktop used by Horst Eckardt can crunch out the ab initio equations in this note. The results for the energy levels can be compared with the analytically known energy levels of the relativistic H atom given in note 372(4), Eq. (42).

a372ndpapernotes6.pdf

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