SOLE POLE Scientists are searching for hypothetical particles
called magnetic monopoles, which have a single north or south magnetic pole.
Hypothetical particles
called magnetic monopoles, envisioned in the wider illustration, would possess only a north or south pole.
The existence of hypothetical particles
called magnetic monopoles would explain why electric charge comes in integer multiples of the charge of an electron instead of a continuous range of values, Emily Conover reported in «Magnets with a single pole are still giving physicists the slip» (SN: 2/3/18, p. 10).
Not exact matches
The limit on the number of such high - speed relic
monopoles that could inhabit the Milky Way without sapping its
magnetic field is
called the «Parker bound».
Even if the existence of
magnetic monopoles as elementary particles remains a fundamental open question, condensed - matter physicists have managed to reproduce artificial versions of these exotic particles in rare - earth oxide crystals
called «spin ices.»
Los Alamos National Laboratory staff scientist Cristiano Nisoli explained, «The emergence of
magnetic monopoles in spin ice systems is a particular case of what physicists
call fractionalization, or deconfinement of quasi-particles that together are seen as comprising the fundamental unit of the system, in this case the north and south poles of a nanomagnet.
But physicists often carry out their calculations in terms of momentum space (also
called reciprocal space) rather than ordinary three - dimensional space, Lu explains, and in that framework
magnetic monopoles can exist — and their properties match those of Weyl points.
The
magnetic strings in the spin ice do not fit the Dirac definition, Kimball feels, because they are, in fact, observable and merely carry flux between two opposing so -
called monopoles.
By his assessment, the
magnetic strings in the spin ice do not fit the Dirac definition because they are, in fact, observable and merely carry flux between two opposing so -
called monopoles.
Magnetic monopoles are another hypothetical defect that could affect the CMB, as could knots or twists in space - time
called textures.