3,486 research outputs found

    Convergent Iterative Solutions of Schroedinger Equation for a Generalized Double Well Potential

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    We present an explicit convergent iterative solution for the lowest energy state of the Schroedinger equation with a generalized double well potential V=g22(x2βˆ’1)2(x2+a)V=\frac{g^2}{2}(x^2-1)^2(x^2+a). The condition for the convergence of the iteration procedure and the dependence of the shape of the groundstate wave function on the parameter aa are discussed.Comment: 23 pages, 7 figure

    Iterative Solutions for Low Lying Excited States of a Class of Schroedinger Equation

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    The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. The results show that the iterative solution converges rapidly when the coupling gg is not too small.Comment: 14 pages, 4 figure

    Jarlskog Invariant of the Neutrino Mapping Matrix

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    The Jarlskog Invariant JΞ½βˆ’mapJ_{\nu-map} of the neutrino mapping matrix is calculated based on a phenomenological model which relates the smallness of light lepton masses mem_e and m1m_1 (of Ξ½1\nu_1) with the smallness of TT violation. For small TT violating phase Ο‡l\chi_l in the lepton sector, JΞ½βˆ’mapJ_{\nu-map} is proportional to Ο‡l\chi_l, but mem_e and m1m_1 are proportional to Ο‡l2\chi_l^2. This leads to JΞ½βˆ’mapβ‰…1/6memΞΌ+O(memΞΌmΟ„2)+O(m1m2m32) J_{\nu-map} \cong {1/6}\sqrt{\frac{m_e}{m_\mu}}+O \bigg(\sqrt{\frac{m_em_\mu}{m_\tau^2}}\bigg)+O \bigg(\sqrt{\frac{m_1m_2}{m_3^2}}\bigg). Assuming m1m2m32<<memΞΌ\sqrt{\frac{m_1m_2}{m_3^2}}<<\sqrt{\frac{m_e}{m_\mu}}, we find JΞ½βˆ’mapβ‰…1.16Γ—10βˆ’2J_{\nu-map}\cong 1.16\times 10^{-2}, consistent with the present experimental data.Comment: 19 page

    Compatible Quantum Theory

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    Formulations of quantum mechanics can be characterized as realistic, operationalist, or a combination of the two. In this paper a realistic theory is defined as describing a closed system entirely by means of entities and concepts pertaining to the system. An operationalist theory, on the other hand, requires in addition entities external to the system. A realistic formulation comprises an ontology, the set of (mathematical) entities that describe the system, and assertions, the set of correct statements (predictions) the theory makes about the objects in the ontology. Classical mechanics is the prime example of a realistic physical theory. The present realistic formulation of the histories approach originally introduced by Griffiths, which we call 'Compatible Quantum Theory (CQT)', consists of a 'microscopic' part (MIQM), which applies to a closed quantum system of any size, and a 'macroscopic' part (MAQM), which requires the participation of a large (ideally, an infinite) system. The first (MIQM) can be fully formulated based solely on the assumption of a Hilbert space ontology and the noncontextuality of probability values, relying in an essential way on Gleason's theorem and on an application to dynamics due in large part to Nistico. The microscopic theory does not, however, possess a unique corpus of assertions, but rather a multiplicity of contextual truths ('c-truths'), each one associated with a different framework. This circumstance leads us to consider the microscopic theory to be physically indeterminate and therefore incomplete, though logically coherent. The completion of the theory requires a macroscopic mechanism for selecting a physical framework, which is part of the macroscopic theory (MAQM). Detailed definitions and proofs are presented in the appendice
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