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T. Djama

Publications and source records attributed to T. Djama.

14 recordsLinked to original sources
arXiv2014

Reduced quantum actions for symmetrical and some separated variables potentials cases

In this paper, we pointed out the separability of the quantum reduced action in 3D into the sum of three 1D reduced actions depending on the variables $x$, $y$ and $z$ respectively, and this was done for the case of a potential that has a cartesian symmetry. This separability was not evident at the first sight. In addition, the 3D-QSHJE is also separable into three 1D-QSHJE. The free particle, the spherical and the cylindrical symmetry cases are not discussed in this paper, however an analogy with the cartesian symmetry case can be down to show the separability of the total reduced actions into the sum of three 1D reduced actions for each case.

quant-ph↗
arXiv2014

3D Quantum Trajectories. Quantum orbits of the Hydrogen's electron

In this paper, we introduced the 3D-Quantum Stationary Hamilton Jacobi Equation for a central potential, and established the 3D quantum law of motion of an electron in the presence of such a potential. We established a system of three differential equations from which, and as a numerical application, we plotted the 3D quantum trajectories of the Hydrogen's electron for the ground state and two excited states. we did a comparison between a supposed classical trajectory of the hydrogen electron and the corresponding QTs. We found out that for a particular set of the hidden variables, the QT is close in its shape to the classical one.

quant-ph↗
arXiv2004

The 3D Quantum Law of motion

In this paper, we give the solution of the three dimensional quantum stationary Hamilton-Jacobi Equation (3D-QSHJE) for a general form of the potential. We present the quantum coordinates transformation with which the 3D-QSHJE takes its classical form. Then, we derived the 3D quantum law of motion.

quant-ph↗
arXiv2004

The Relativistic Quantum Motions

Using the relativistic quantum stationary Hamilton-Jacobi equation within the framework of the equivalence postulate, and grounding oneself on both relativistic and quantum Lagrangians, we construct a Lagrangian of a relativistic quantum system in one dimension and derive a third order equation of motion representing a first integral of the relativistic quantum Newton's law. Then, we plot the relativistic quantum trajectories of a particle moving under the constant and the linear potentials. We establish the existence of nodes and link them to the de Broglie's wavelength.

quant-ph↗
arXiv2004

2D(1+1) Quantum Gravity. Gravitational Quantum Stationary Hamilton-Jacobi Equation

In the present article, we construct a 2D formulation of quantum gravity in the framework of a deterministic theory. In this context, a Quantum stationary Hamilton-Jacobi equation is derived from the Klein- Gordon equation written in the presence of a gravitational field. We show that this equation reduces to the Quantum stationary Hamilton- Jacobi equation when the gravitational field is not present in the 2D time-space. As a second step, we introduce the quantum gravitational Lagrangian for the quantum motion of a particle moving in the presence of a gravitational field. We, deduce the relationship between the gravitational quantum conjugate momentum and the velocity of the particle.

hep-th↗
arXiv2003

Nodes in the Relativistic Quantum Trajectories and Photon's Trajectories

Through the constant potential and the linear potential, we establish the existence of nodes for the relativistic quantum trajectories as the same way as for the quantum trajectories. We establish the purely relativistic limit $(\hbar \to 0)$ for these trajectories, and link the nodes to de Broglie's wavelength.

quant-ph↗
arXiv2003

The Relativistic Quantum Law of motion for a Particle with Spin 1/2

In this paper, we introduce a deterministic approach of quantum mechanics for particles with spin 1 2 moving in one dimension. We present a Lagrangian of a spinning particle ($s ={1 \over 2} $), and deduce the expression of the conjugate momentum related to the velocity of the particle.

quant-ph↗
arXiv2002

Reply to "Comments on Bouda and Djama's 'Quantum Newton's Law'"

In this reply, we hope to bring clarifications about the reservations expressed by Floyd in his comments, give further explanations about the choice of the approach and show that our fundamental result can be reproduced by other ways. We also establish that Floyd's trajectories manifest some ambiguities related to the mathematical choice of the couple of solutions of Schrödinger's equation.

quant-ph↗
arXiv2002

Trajectories in the Context of the Quantum Newton's Law

In this paper, we apply the one dimensional quantum law of motion, that we recently formulated in the context of the trajectory representation of quantum mechanics, to the constant potential, the linear potential and the harmonic oscillator. In the classically allowed regions, we show that to each classical trajectory there is a family of quantum trajectories which all pass through some points constituting nodes and belonging to the classical trajectory. We also discuss the generalization to any potential and give a new definition for de Broglie's wavelength in such a way as to link it with the length separating adjacent nodes. In particular, we show how quantum trajectories have as a limit when $\hbar \to 0$ the classical ones. In the classically forbidden regions, the nodal structure of the trajectories is lost and the particle velocity rapidly diverges.

quant-ph↗
arXiv2001

Relativistic Quantum Newton's Law and photon trajectories

Using the relativistic quantum Hamilton-Jacobi equation within the framework of the equivalence postulate, and grounding one self on both relativistic and quantum Lagrangians, we construct a Lagrangian of relativistic quantum system in one dimension and derive a third order equation of motion representing a first integral of the relativistic quantum Newton's law. Then, we investigate the free particle case and establish the photon's trajectories.

quant-ph↗
arXiv2001

The Quantum Newton's Law

Using the quantum Hamilton-Jacobi equation within the framework of the equivalence postulate, we construct a Lagrangian of a quantum system in one dimension and derive a third order equation of motion representing a first integral of the quantum Newton's law. We then integrate this equation in the free particle case and compare our results to those of Floydian trajectories. Finally, we propose a quantum version of Jacobi's theorem.

quant-ph↗