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We consider that no mean magnetic field exists during this epoch, but that there is a mean magnetic energy associated with large-scale magnetic inhomogeneities. We study the evolution of these inhomogeneities and their influence on the…

Astrophysics · Physics 2009-01-14 E. Battaner , E. Florido , J. Jimenez-Vicente

Vector fields are a highly abstract physical concept that is often taught using visualizations. Although vector representations are particularly suitable for visualizing quantitative data, they are often confusing, especially when…

Physics Education · Physics 2024-02-20 Christoph Hoyer , Raimund Girwidz

We first obtain the electric and magnetic fields corresponding to a `spin'-orbit classical interaction of a r^2 potential. Assuming that Maxwell equations hold for these fields, we infer the conditions on the `spin' vector forbidding…

General Physics · Physics 2007-05-23 H. C. Rosu , F. Aceves de la Cruz

We give a simple proof of Dorronsoro's theorem and use similar ideas to establish an equivalence for embeddings of vector fields.

Classical Analysis and ODEs · Mathematics 2015-06-23 Dmitriy Stolyarov

A simple argument against the existence of magnetic monopoles is given. The argument is an important part of the quantum theory of the electric charge developed by the author.

High Energy Physics - Theory · Physics 2007-05-23 Andrzej J. Staruszkiewicz

We present new bounds on the cosmic abundance of magnetic monopoles based on the survival of primordial magnetic fields during the reheating and radiation-dominated epochs. The new bounds can be stronger than the conventional Parker bound…

High Energy Physics - Phenomenology · Physics 2022-09-22 Takeshi Kobayashi , Daniele Perri

Theory of pointlike magnetic monopole with an arbitrary magnetic charge is considered. It is shown that a proper description requires making use of nonunitary representations of the rotation group and the nonassociative generalization of…

High Energy Physics - Theory · Physics 2012-07-05 Alexander I Nesterov , F. Aceves de la Cruz

Non-perturbative constraints on many body physics--such as the famous Lieb-Schultz-Mattis theorem--are valuable tools for studying strongly correlated systems. To this end, we present a number of non-perturbative results that constrain the…

Strongly Correlated Electrons · Physics 2021-03-24 Oleg Dubinkin , Julian May-Mann , Taylor L. Hughes

The generation of large-scale magnetic fields is studied in inflationary cosmology. We consider the violation of the conformal invariance of the Maxwell field by dilatonic as well as non-minimal gravitational couplings. We derive a general…

Astrophysics · Physics 2009-11-11 Kazuharu Bamba , Misao Sasaki

It is shown that a magnetic monopole appears as the tension state of the primary electric charge at its motion through each section of the path equal to the particle's de Broglie wavelength. This conclusion is followed from a submicroscopic…

General Physics · Physics 2021-06-21 Volodymyr Krasnoholovets

We derive generic equations for a vector field driving the evolution of flat homogeneous isotropic universe and give a comparison with a scalar filed dynamics in the cosmology. Two exact solutions are shown as examples, which can serve to…

General Relativity and Quantum Cosmology · Physics 2009-11-10 V. V. Kiselev

Magnetic fields are a very special form of elastic medium. Within astrophysical environments (magnetised stars and protogalaxies) they counteract shear and rotational distortions as well as gravitational collapse. Their vector nature allows…

General Relativity and Quantum Cosmology · Physics 2023-07-19 Panagiotis Mavrogiannis

In this paper we present a Yang-Mills type gauge theory of vector-tensor gravity, where the tetrad, the spin connection and vector field are identified with components of the gauge field. This setup leads to a theory that is contained in…

General Relativity and Quantum Cosmology · Physics 2023-04-21 Javier Chagoya , M. Sabido , A. Silva-García

We proposed a gravitation theory based on an analogy with electrodynamics on the basis of a vector field. For the first time, to calculate the basic gravitational effects in the framework of a vector theory of gravity, we use a Lagrangian…

General Relativity and Quantum Cosmology · Physics 2011-04-20 V. N. Borodikhin

We study the equation of motion of neutral vector bosons bearing a magnetic moment (MM). The effective rest mass of vector bosons is a decreasing function of the magnetic field intensity. Consequently a diffuse condensation of the bosons…

High Energy Physics - Phenomenology · Physics 2017-01-30 Gretel Quintero Angulo , Aurora Perez Martinez , Hugo Perez Rojas

We define the notion of a finite-time singularity of a vector field and then discuss a technique suitable for the asymptotic analysis of vector fields and their integral curves in the neighborhood of such a singularity. Having in mind the…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Spiros Cotsakis , John D. Barrow

In this paper, we investigate vector fields on polyhedral complexes and their associated trajectories. We study vector fields which are analogue of the gradient vector field of a function in the smooth case. Our goal is to define a nice…

Algebraic Topology · Mathematics 2021-09-09 Takeo Nishinou

Lorentz invariant scalar functions of the magnetic field are defined in an ideal relativistic plasma. These invariants are advected by the plasma fluid motion and play the role of the {\it potential magnetic field} introduced by R. Hide in…

Plasma Physics · Physics 2018-09-12 Francesco Pegoraro

As documented by textbooks, the teaching of electromagnetic induction in university and high school courses is primarily based on what Feynman labeled as the ``flux rule'', downgrading it from the status of physical law. However, Maxwell…

Classical Physics · Physics 2023-04-05 Giuseppe Giuliani

The vector field problem is an important and classical problem in differential topology. In this survey we shall consider the vector field problem focusing mainly on the class of compact homogeneous spaces.

Algebraic Topology · Mathematics 2018-11-30 Parameswaran Sankaran