Connecting Bernoulli and Schrödinger Equations and Its Impact on Quantum-Mechanic Wave Function and Entanglement Problems

Author(s):  
Siavash H. Sohrab
2006 ◽  
Vol 21 (06) ◽  
pp. 1359-1377 ◽  
Author(s):  
AXEL SCHULZE-HALBERG

The formalism of Darboux transformations is established for time-dependent Schrödinger equations with an effective (position-dependent) mass. Explicit formulas are obtained for the transformed wave function and the difference between the original and the transformed potential. It is shown that for a noneffective mass our Darboux transformation reduces correctly to the well-known Darboux transformation.


2011 ◽  
Vol 233-235 ◽  
pp. 2154-2157
Author(s):  
Jun Lu

In this paper, we solve the rigorous solutions of the stationary Schrödinger equations for the harmonic oscillator in nanomaterials within the framework of the quantum phase-space representation established by Torres-Vega and Frederick. We obtain the phase-space eigenfunctions of the harmonic oscillator. We also discuss the character of wave function and the “Fourier-like” projection transformations in phase space.


1965 ◽  
Vol 43 (3) ◽  
pp. 463-475 ◽  
Author(s):  
Malcolm McMillan

Approximate forms of the symmetric S-state component of the triton wave function are found which are improvements on the well-known exponential and Irving functions. The method does not involve variational parameters; the functions are obtained from reduced Schrödinger equations found using the methods of Feshbach and Rubinow and of Morpurgo. Some properties of these equations and their solutions are given. The reduced equations are solved numerically for various phenomenological nucleon-nucleon potentials without hard cores, and the functions are presented graphically. The eigenvalves of the reduced equations differ from the experimental triton energy, as is to be expected if only the symmetric S-state component is considered, and in an effort to simulate the effect of the other components, the depth of the nucleon–nucleon potential is increased until the computed eigenvalues equal the experimental triton energy. The corresponding eigenfunctions are given graphically. The Coulomb radius of 3He has been calculated with each of the functions, and the values found are generally reasonable.


2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
M. Mousavi ◽  
M. R. Shojaei

We have investigated energy levels mirror nuclei of the17O and17F in relativistic and nonrelativistic shell model. The nuclei17O and17F can be modeled as a doubly magic17O = n + (N = Z = 8) and17F = p + (N = Z = 8), with one additional nucleon (valence) in the ld5/2level. Then we have selected the quadratic Hellmann potential for interaction between core and single nucleon. Using Parametric Nikiforov-Uvarov method, we have calculated the energy levels and wave function in Dirac and Schrodinger equations for relativistic and nonrelativistic, respectively. Finally, we have computed the binding and excited energy levels for mirror nuclei of17O and17F and compare with other works. Our results were in agreement with experimental values and hence this model could be applied for similar nuclei.


2020 ◽  
Vol 17 (36) ◽  
pp. 565-583
Author(s):  
Dedy Adrianus BILAUT ◽  
A SUPARMI ◽  
C CARI ◽  
Suci FANIANDARI

The exact solutions of the Schrodinger equations (SE) in the D-dimensional coordinate system have attracted the attention of many theoretical researchers in branches of quantum physics and quantum chemistry. The energy eigenvalues and the wave function are the solutions of the Schrodinger equation that implicitly represents the behavior of a quantum mechanical system. This study aimed to obtain the eigenvalues, wave functions, and thermodynamic properties of the 6-Dimensional Schrodinger equation under Double Ring-Shaped Oscillator (DRSO) and Manning-Rosen potential. The variable separation method was applied to reduce the one 6-Dimensional Schrodinger equation depending on radial and angular non-central potential into five onedimensional Schrodinger equations: one radial and five angular Schrodinger equations. Each of these onedimensional Schrodinger equations was solved using the SUSY QM method to obtain one eigenvalue and one wave function of the radial part, five eigenvalues, and five angular wave functions angular part. Some thermodynamic properties such, the vibrational mean energy 𝑈, vibrational specific heat 𝐶, vibrational free energy 𝐹, and vibrational entropy 𝑆, were obtained using the radial energy equations. The results showed that except the 𝑛𝑙1, all increment of angular quantum number decreases the energy values. Increments of all potential parameter increase the energy values. Increment of angular quantum number and potentials parameter increases the amplitude and shifts the wave functions to the left. However, the increment of 𝑛𝑙1, 𝛼, 𝜎, and 𝜌 decrease the amplitude and shift wavefunctions to the right. Moreover, the vibrational mean energy 𝑈 and free energy 𝐹 increased as the increasing value of potentials parameters, where the ω parameter has the dominant effect than the other parameters. The vibrational specific heat 𝐶 and entropy 𝑆 affected only by the 𝜔 parameter, where 𝐶 and 𝑆 decreased as the increase of 𝜔.


2018 ◽  
Vol 52 (2) ◽  
pp. 751-772 ◽  
Author(s):  
Chunguang Xiong ◽  
Fusheng Luo ◽  
Xiuling Ma

This paper presents error analysis of hybridizable discontinuous Galerkin (HDG) time-domain method for solving time dependent Schrödinger equations. The numerical trace and numerical flux are constructed to preserve the conservative property for the density of the particle described. We prove that there exist the superconvergence properties of the HDG method, which do hold for second-order elliptic problems, uniformly in time for the semidiscretization by the same method of Schrödinger equations provided that enough regularity is satisfied. Thus, if the approximations are piecewise polynomials of degree r, the approximations to the wave function and the flux converge with order r + 1. The suitably chosen projection of the wave function into a space of lower polynomial degree superconverges with order r + 2 for r ≥ 1 uniformly in time. The application of element-by-element postprocessing of the approximate solution which provides an approximation of the potential convergence with order r + 2 for r ≥ 1 in L2 is also uniformly in time.


2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Nakao Hayashi ◽  
Chunhua Li ◽  
Pavel I. Naumkin

We consider the initial value problem for the nonlinear dissipative Schrödinger equations with a gauge invariant nonlinearityλup-1uof orderpn<p≤1+2/nfor arbitrarily large initial data, where the lower boundpnis a positive root ofn+2p2-6p-n=0forn≥2andp1=1+2forn=1.Our purpose is to extend the previous results for higher space dimensions concerningL2-time decay and to improve the lower bound ofpunder the same dissipative condition onλ∈C:Im⁡ λ<0andIm⁡ λ>p-1/2pRe λas in the previous works.


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