Abstract We propose a general model where quintessence couples to electromagnetism via its kinetic term. This novelty generalizes the linear dependence of gauge function on ϕ , commonly adopted in literature. The interaction naturally induces time variation fine-structure constant that can be formulated within disformally coupled framework, akin Gordon metric. Through suitable parametrization s...

Recently, an intriguing relationship (the double copy ) has been discovered between theories like electromagnetism and gravity. This potentially gives us a new way to think about gravity, there are also practical applications involving the efficient calculation of gravitational observables how simulate gravity using optical systems. In this tutorial, we will review what is known copy, argue tha...

Standard formulae of classical electromagnetism for the forces between electric charges in motion derived from retarded potentials are compared with those obtained from a recently developed relativistic classical electrodynamic theory with an instantaneous inter-charge force. Problems discussed include small angle Ruther-ford scattering, Jackson's recent 'torque paradox' and circular Keplerian ...

When a (frequency–domain) boundary value problem involving a homogeneous linear material is solved to assess the validity of the Post constraint, a conflict arises between the fundamental differential equations of electromagnetism in the chosen material and a näive application of the usual boundary conditions. It is shown here that the conflict vanishes when the boundary conditions are properly...

We propose a naive unification of Electromagnetism and General Relativity based on enlarging the gauge group of Ashtekar’s new variables. We construct the connection and loop representations and analyze the space of states. In the loop representation, the wavefunctions depend on two loops, each of them carrying information about both gravitation and electromagnetism. We find that the Chern-Simo...

A linear vector model of gravitation is introduced in the context of quantum physics as a generalization of electromagnetism. The gravitoelectromagnetic gauge symmetry corresponds to a hyperbolic unitary extension of the usual complex phase symmetry of electromagnetism. The reversed sign for the gravitational coupling is obtained by means of the pseudoscalar of the underlying complex Clifford a...

The genesis of the Post constraint is premised on two attributes of modern electromagnetism: (i) its microscopic nature, and (ii) the status of ẽ (x, t) and b̃ (x, t) as the primitive electromagnetic fields. This constraint can therefore not arise in EH–electromagnetism, wherein the primitive electromagnetic fields are the macroscopic fields Ẽ (x, t) and H̃ (x, t). Available experimental evidence...

Standard formulae of classical electromagnetism for the forces between electric charges in motion derived from retarded potentials are compared with those obtained from a recently developed relativistic classical electrodynamic theory with an instantaneous inter-charge force. Problems discussed include small angle Ruther-ford scattering, Jackson's recent 'torque paradox' and circular Keplerian ...