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We start from classical general relativity coupled to matter fields. Each configuration variable and its conjugate momentum, as also space-time points, are raised to the status of matrices [equivalently operators]. These matrices obey a…

General Relativity and Quantum Cosmology · Physics 2020-11-09 Tejinder P. Singh

This paper generalizes some known solitary solutions of a time-dependent Hamiltonian in two ways: The time-dependent field can be an elliptic function, and the time evolution is obtained for a complete set of basis vectors. The latter makes…

Quantum Physics · Physics 2015-04-01 Jan Naudts , Winny O'Kelly de Galway

We study the solutions of a generalized Allen-Cahn equation deduced from a Landau energy functional, endowed with a non-constant higher order stiffness. We analytically solve the stationary problem and deduce the existence of so-called…

Pattern Formation and Solitons · Physics 2017-03-03 Emilio N. M. Cirillo , Nicoletta Ianiro , Giulio Sciarra

We extend the three-dimensional noncommutative relations of the positions and momenta operators to those in the four dimension. Using the Bopp shift technique, we give the Heisenberg representation of these noncommutative algebras and endow…

High Energy Physics - Theory · Physics 2024-03-15 Shi-Dong Liang

A five-dimensional solution to Einstein's equations coupled to a scalar field has been proposed as a partial solution to the cosmological constant problem: the effect of arbitrary vacuum energy (tension) of a 3-brane is cancelled; however,…

High Energy Physics - Theory · Physics 2014-11-18 P. Binetruy , J. M. Cline , C. Grojean

One should not confuse a physical constant with a theory which incorporates the constant. Planck's constant h can appear in classical or quantum theories.

Classical Physics · Physics 2008-03-26 Timothy H. Boyer

The fundamental equations of particle motion lead to a modified Poisson equation including dynamic charge. This charge derives from density oscillations of a particle; it is not discrete, but continuous. Within the dynamic model of hydrogen…

Quantum Physics · Physics 2007-05-23 W. A. Hofer

According to previous work on magnetic monopoles, static regular solutions are nonexistent if the vacuum expectation value of the Higgs field $\eta$ is larger than a critical value $\eta_{{\rm cr}}$, which is of the order of the Planck…

General Relativity and Quantum Cosmology · Physics 2008-02-03 Nobuyuki Sakai

We point out the existence of a consistency relation involving the 3-point function of scalar perturbations which is valid in any inflationary model, independently of the inflaton Lagrangian under the assumption that the inflaton is the…

Astrophysics · Physics 2009-11-10 Paolo Creminelli , Matias Zaldarriaga

In present paper we confirm our previous result [5] that the Planck constant is adiabatic invariant of electromagnetic field propagating on the adiabatically changed Finslerian manifold. Direct calculation from cosmological parameters gives…

General Physics · Physics 2024-05-21 Anton A. Lipovka

A covariant Lagrangian formulation of a solution to the cosmological constant problem, based on vizualising the fluctuations of the vacuum energy as a non-equilibrium process with stochastic behaviour, is presented. The variational…

Astrophysics · Physics 2016-08-30 J. W. Moffat

The constants of motion of the following systems are deduced: a relativistic particle with linear dissipation, a no-relativistic particle with a time explicitly depending force, a no-relativistic particle with a constant force and time…

Classical Physics · Physics 2011-08-19 G. López , L. A. Barrera , Y. Garibo , H. Hernández , J. C. Salazar , C. A. Vargas

In this paper the Planck function is derived in the frequency domain using the method of oscillators. It is also presented in the wavelength domain and in the wave number domain. The latter is mainly used in spectroscopy for studying…

History and Philosophy of Physics · Physics 2009-11-12 Gerhard Kramm , Nicole Mölders

We study the N-dependence of the thermodynamical variables and the dynamical behavior of the well-known Hamiltonian Mean Field model. Microcanonical analysis revealed a thermodynamic limit which defers from the a priory traditional…

Statistical Mechanics · Physics 2007-05-23 L. Velazquez , R. Sospedra , J. C. Castro , F. Guzman

We study the most general form of a three dimensional classical integrable system with axial symmetry and invariant under the axis reflection. We assume that the three constants of motion are the Hamiltonian, $H$, with the standard form of…

Mathematical Physics · Physics 2009-11-13 M. Gadella , J. Negro , G. P. Pronko

Relativistic field theory for a vector field on a curved space-time is considered assuming that the Lagrangian field density is quadratic and contains field derivatives of first order at most. By applying standard variational calculus, the…

General Relativity and Quantum Cosmology · Physics 2024-12-02 Roberto Dale , Alicia Herrero , Juan Antonio Morales-Lladosa

We begin by discussing known theoretical results about the sensitivity of quantum states to changes in the value of Planck's constant h. These questions are related to positivity issues for self-adjoint trace class operators, which are not…

Quantum Physics · Physics 2016-12-19 Maurice de Gosson , Makan Mohageg

A variation of fundamental constants of physics is proposed in a frame of static universe. It is shown when the velocity of light increases (decreases) the Planck's constant increases (decreases) and mass of bodies decreases (increases).…

Astrophysics · Physics 2007-05-23 V. Jonauskas

The problem of the construction of Lagrangian and Hamiltonian structures starting from two first order equations of motion is presented. This new approach requires the knowledge of one (time independent) constant of motion for the dynamical…

Classical Physics · Physics 2014-03-04 Sergio A. Hojman

The Polchinski exact renormalization group equation for a scalar field theory in arbitrary dimensions is translated, by means of a covariant Hamiltonian formalism, into a partial differential equation for an effective Hamiltonian density…

High Energy Physics - Theory · Physics 2015-11-02 Luca Zambelli