Il constante progredire della frontiera tra teologia e scienza. Parte 2º: Metafisica

On constant movement of frontiers between Science and Theology. Part 2: Metaphysics In the first part (Karwasz, Scientia et Fides, 3(1) 2015) entitled “Physics” we showed how discoveries of modern sciences do not contradict Bible: neither in the subject of the beginning of the word nor in the subjects of the homogeneity of Homo Sapiens and the common origin of Euroasiatic languages. In this part we show that numerous “explanations” of natural phenomena like Pauli’s exclusion principle governing the chemistry, like space-time of Einstein, like apparent paradoxes of quantum mechanics, in reality move the border of our knowledge towards metaphysics: writings of philosophers from Aristotle, S. Augustine, S. Thomas to Kant are not in contrast with ontological conclusions of modern physics. In this way, the explanations based on philosophical principles find their place in natural sciences

Applicability of Modified Effective-Range Theory to positron-atom and positron-molecule scattering

We analyze low-energy scattering of positrons on Ar atoms and N2 molecules using Modified Effective-Range Theory (MERT) developped by O'Malley, Spruch and Rosenberg [Journal of Math. Phys. 2, 491 (1961)]. We use formulation of MERT based on exact solutions of Schroedinger equation with polarization potential rather than low-energy expansions of phase shifts into momentum series. We show that MERT describes well experimental data, provided that effective-range expansion is performed both for s- and p-wave scattering, which dominate in the considered regime of positron energies (0.4 - 2 eV). We estimate the values of the s-wave scattering lenght and the effective range for e+ - Ar and e+ - N2 collisions.Comment: RevTeX, 4 pages, 2 figure