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We discuss certain generalization of the Hilbert space of states in noncommutaive quantum mechanics that, as we show, introduces magnetic monopoles into the theory. Such generalization arises very naturally in the considered model, but can…

General Physics · Physics 2017-03-08 Samuel Kováčik , Peter Prešnajder

Starting from a weak gauge principle we give a new and critical revision of the argument leading to charge quantization on arbitrary spacetimes. The main differences of our approach with respect to previous works appear on spacetimes with…

High Energy Physics - Theory · Physics 2007-05-23 E. Minguzzi , C. Tejero Prieto , A. Lopez Almorox

In their seminal paper Aharonov and Bohm (1959) claimed that electromagnetic fields can act at a distance on charged particles even if they are identically zero in the region of space where the particles propagate. They proposed two…

Mathematical Physics · Physics 2011-07-15 Ricardo Weder

It is proved that the phase shift of a polarized neutron interacting with a spatially uniform time-dependent magnetic field, demonstrates the same physical principles as the magnetic Aharonov-Bohm effect. The crucial role of inert objects…

Quantum Physics · Physics 2009-10-31 E. Comay

Magnetic monopoles in Yang-Mills-Higgs theory with a non-abelian unbroken gauge group are classified by holomorphic charges in addition to the topological charges familiar from the abelian case. As a result the moduli spaces of monopoles of…

High Energy Physics - Theory · Physics 2009-10-30 F. A. Bais , B. J. Schroers

We derive stronger bounds on the magnetic monopole charge of the proton, and hence on non-associative quantum mechanics from measurements of the magnetic fields of the Earth, the Moon and Mars. Limits are several orders of magnitude…

General Physics · Physics 2019-05-17 Andrea Addazi , Antonino Marciano

The long-sought "magnetic monopole" appears to be -- not a fermion distinct from the electrons and quarks -- but a charge carried by the known electrons and the quarks themselves. Similarly to the "Z" charge of electroweak theory, however,…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jay R. Yablon

In a minimal extension of the Standard Model, in which new neutral fermions have been introduced, we show that the requirement of vanishing anomalies fixes the hypercharges of all fermions uniquely. This naturally leads to electric charge…

High Energy Physics - Phenomenology · Physics 2011-07-19 M. Nowakowski , A. Pilaftsis

Preceding Comment challenged my claim that potentials might be just auxiliary mathematical tools and that they are not necessary for explaining physical phenomena. The Comment did not confront my explanation without potentials of the…

Quantum Physics · Physics 2015-09-30 Lev Vaidman

Hamilton-Jacobi equation which governs classical mechanics and electrodynamics explicitly depends on the electromagnetic potentials (A,{\phi}), similar to Schroedinger equation. We derived the Aharonov-Bohm effect from Hamilton-Jacobi…

Quantum Physics · Physics 2013-04-11 Alexander Ershkovich

In the present work we argue that the usual assumption that magnetic currents possess the vector structure characteristic of electric currents may be the source of several difficulties in the theory of magnetic monopoles. We propose an {\it…

High Energy Physics - Theory · Physics 2007-05-23 Cardoso de Melo , M. C. Nemes , Saulo C. S. Silva

In theories with Chern-Simons terms or modified Bianchi identities, it is useful to define three notions of either electric or magnetic charge associated with a given gauge field. A language for discussing these charges is introduced and…

High Energy Physics - Theory · Physics 2007-05-23 Donald Marolf

In most introductory courses on electrodynamics, one is taught the electric charge is quantised but no theoretical explanation related to this law of nature is offered. Such an explanation is postponed to graduate courses on…

History and Philosophy of Physics · Physics 2019-04-09 Ricardo Heras

Dirac's quantization of magnetic monopole strength is derived without reference to a (singular, patched) vector potential.

High Energy Physics - Theory · Physics 2017-08-23 R. Jackiw

In gauge theories like the standard model, the electric charges of the fermions can be heavily constrained from the classical structure of the theory and from the cancellation of anomalies. We argue that the anomaly conditions are not quite…

High Energy Physics - Phenomenology · Physics 2009-10-28 R. Foot

There is a consensus today that the the main lesson of the Aharonov-Bohm effect is that a picture of electromagnetism based on the local action of the field strengths is not possible in quantum mechanics. Contrary to this statement it is…

Quantum Physics · Physics 2015-05-30 Lev Vaidman

In the experiments, the quantity measurd is the product of the charge and the magnetic field from which fractional charge is deduced. There is no objection to measuring the fractional charge as long as it is remembered that the product of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Keshav N. Shrivastava

A magnetic monopole is placed at the centre of a 3-ball whose surface, S, is tiled by the symmetry group, G, of a regular solid. The quantum mechanics on the two-dimensional quotient, S/G, is developed and the monopole charge is found to be…

High Energy Physics - Theory · Physics 2009-10-31 J. S. Dowker

This paper presents a \emph{non-instant field model} for electrodynamics that permits a causal explanation of the \emph{Aharonov-Bohm effect} and a \emph{covariant quantization} of the respective Maxwell equations via the…

Mathematical Physics · Physics 2011-11-28 Richard Kowar

Quantization of superflow-circulation and of magnetic-flux are considered for systems, such as superfluid $^3$He-A and unconventional superconductors, having nonscalar order parameters. The circulation is shown to be the anholonomy in the…

Condensed Matter · Physics 2009-10-28 Yuli Lyanda-Geller , Paul M. Goldbart , Daniel Loss