scholarly journals Gravity or Magnetic Monopoles? You Cannot Have Both!

2020 ◽  
Author(s):  
Stephane Maes
Keyword(s):  
Standard Model ◽  
Magnetic Monopole ◽  
Magnetic Monopoles ◽  
Charge Quantization ◽  
The Standard Model

In this paper, we argue that gravity breaks the symmetry between electric and magnetic equations (without sources) within the Standard Model. As a result, the motivation for introducing magnetic monopoles disappears (without affecting charge quantization): magnetic monopole probably do not exist in the presence or gravity. It is consistent with the absence of observation of magnetic monopoles and resolves the magnetic monopole cosmology problem. This result could have serious implications for supersymmetry, supergravity, GUTs and ToEs, including in particular superstrings. Some of these implications, and possible ways forward, are discussed.

scholarly journals The MoEDAL Experiment at the LHC - Searching for Physics Beyond the Standard Model

2018 ◽  
Vol 182 ◽  
pp. 02096
Author(s):  
James Pinfold
Keyword(s):  
Standard Model ◽  
Magnetic Monopole ◽  
Magnetic Charge ◽  
New Physics ◽  
Magnetic Monopoles ◽  
Beyond The Standard Model ◽  
Centre Of Mass ◽  
Mass Energy ◽  
Physics Program ◽  
The Standard Model

MoEDAL is a pioneering experiment designed to search for highly ionizing messengers of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles, that are predicted to exist in a plethora of models beyond the Standard Model. It started data taking at the LHC at a centre-of-mass energy of 13 TeV, in 2015. MoEDAL’s ground breaking physics program defines a number of scenarios that yield potentially revolutionary insights into such foundational questions as: are there extra dimensions or new symmetries; what is the mechanism for the generation of mass; does magnetic charge exist; and what is the nature of dark matter. MoEDAL’s purpose is to meet such far-reaching challenges at the frontier of the field. We will present an overview of the MoEDAL detector, including the planned MAPP subdetector, as well as MoEDAL’s physics program. The concluding section highlights our first physics results on Magnetic Monopole production, that are the world’s best for Monopoles with multiple magnetic charge.

scholarly journals Magnetic monopoles revisited: Models and searches at colliders and in the Cosmos

2020 ◽  
Vol 35 (23) ◽  
pp. 2030012 ◽  
Author(s):  
Nick E. Mavromatos ◽  
Vasiliki A. Mitsou
Keyword(s):  
Standard Model ◽  
Magnetic Monopole ◽  
Theoretical Models ◽  
Finite Energy ◽  
Magnetic Monopoles ◽  
Effective Field ◽  
Higher Derivative ◽  
The Standard Model ◽  
Recent Developments ◽  
Result Interpretation

In this review, we discuss recent developments in both the theory and the experimental searches of magnetic monopoles in past, current and future colliders and in the Cosmos. The theoretical models include, apart from the standard Grand Unified Theories, extensions of the Standard Model that admit magnetic monopole solutions with finite energy and masses that can be as light as a few TeV. Specifically, we discuss, among other scenarios, modified Cho–Maison monopoles and magnetic monopoles in (string-inspired, higher derivative) Born–Infeld extensions of the hypercharge sector of the Standard Model. We also outline the conditions for which effective field theories describing the interaction of monopoles with photons are valid and can be used for result interpretation in monopole production at colliders. The experimental part of the review focuses on, past and present, cosmic and collider searches, including the latest bounds on monopole masses and magnetic charges by the ATLAS and MoEDAL experiments at the LHC, as well as prospects for future searches.

scholarly journals Stringy dyonic solutions and clifford structures

2019 ◽  
Vol 16 (09) ◽  
pp. 1950138
Author(s):  
A. Belfakir ◽  
A. belhaj ◽  
Y. El Maadi ◽  
S. E. Ennadifi ◽  
Y. Hassouni ◽  
...  
Keyword(s):  
Black Hole ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Clifford Algebras ◽  
Magnetic Monopole ◽  
Toroidal Compactifications ◽  
The Standard Model ◽  
Arbitrary Dimensions ◽  
Electrically Charged ◽  
Clifford Structures

Using the toroidal compactification of string theory on [Formula: see text]-dimensional tori, [Formula: see text], we investigate dyonic objects in arbitrary dimensions. First, we present a class of dyonic black solutions formed by two different D-branes using a correspondence between toroidal cycles and objects possessing both magnetic and electric charges, belonging to [Formula: see text] dyonic gauge symmetry. This symmetry could be associated with electrically charged magnetic monopole solutions in stringy model buildings of the standard model (SM) extensions. Then, we consider in some detail such black hole classes obtained from even-dimensional toroidal compactifications, and we find that they are linked to [Formula: see text] Clifford algebras using the vee product. It is believed that this analysis could be extended to dyonic objects which can be obtained from local Calabi–Yau manifold compactifications.

scholarly journals ELECTROWEAK QUARK–LEPTON SYMMETRY AND WEAK TOPOLOGICAL-CHARGE CONFINEMENT IN THE STANDARD MODEL WITH DIRAC NEUTRINOS

2007 ◽  
Vol 22 (21) ◽  
pp. 3669-3691 ◽  
Author(s):  
ERNESTO A. MATUTE
Keyword(s):  
Standard Model ◽  
Topological Charge ◽  
Additive Group ◽  
Weak Field ◽  
Anomaly Cancellation ◽  
Charge Quantization ◽  
Lepton Charge ◽  
The Standard Model ◽  
The One ◽  
Electroweak Model

The standard electroweak model with Dirac neutrinos is extended by way of the principles of electroweak quark–lepton symmetry and weak topological-charge confinement to account for quark–lepton charge relations which, if not accidental, are indicative of charge structures. A mixing in quarks and leptons of underlying integer local charges with integer weak topological charges associated with an additive group Z3, fixed by the anomaly cancellation requirement, is discussed. It is found that the electroweak difference between topological quarks and leptons is the nonequivalence between the topological vacua of their weak field configurations, produced by a four-instanton which carries the topological charge, induces the universal fractional piece of charge distinguishing quarks from leptons, and breaks the underlying symmetry. The constituent quarks of the standard model appear as coming from topological quarks, via the weak four-instanton event. Dual transitions occur for leptons. It is shown that several other fundamental problems left open in the standard electroweak model with Dirac neutrinos are solved: the one-to-one correspondence between quark and lepton flavors, the existence of three generations, the conservation and ungauging of B-L, the electric charge quantization, and the confinement of fractional electric charges.

scholarly journals Charge quantization and the Standard Model from the CP2 and CP3 nonlinear σ-models

2014 ◽  
Vol 731 ◽  
pp. 148-153 ◽  
Author(s):  
Simeon Hellerman ◽  
John Kehayias ◽  
Tsutomu T. Yanagida
Keyword(s):  
Standard Model ◽  
Charge Quantization ◽  
The Standard Model

scholarly journals Magnetic monopoles in field theory and cosmology

2012 ◽  
Vol 370 (1981) ◽  
pp. 5705-5717 ◽  
Author(s):  
Arttu Rajantie
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Standard Model ◽  
Particle Physics ◽  
Magnetic Monopoles ◽  
Beyond The Standard Model ◽  
Quantum Field ◽  
Magnetic Systems ◽  
The Standard Model

The existence of magnetic monopoles is predicted by many theories of particle physics beyond the standard model. However, in spite of extensive searches, there is no experimental or observational sign of them. I review the role of magnetic monopoles in quantum field theory and discuss their implications for particle physics and cosmology. I also highlight their differences and similarities with monopoles found in frustrated magnetic systems.

scholarly journals A FIELD-THEORETIC APPROACH TO CONNES' GAUGE THEORY ON M4 × Z2

2001 ◽  
Vol 16 (19) ◽  
pp. 3203-3216 ◽  
Author(s):  
HIROMI KASE ◽  
KATSUSADA MORITA ◽  
YOSHITAKA OKUMURA
Keyword(s):  
Differential Geometry ◽  
Gauge Theory ◽  
Standard Model ◽  
Field Strength ◽  
Electric Charge ◽  
Theoretic Approach ◽  
Higgs Potential ◽  
Charge Quantization ◽  
Generation Number ◽  
The Standard Model

Connes' gauge theory on M4 × Z2 is reformulated in the Lagrangian level. It is pointed out that the field strength in Connes' gauge theory is not unique. We explicitly construct a field strength different from Connes' and prove that our definition leads to the generation-number independent Higgs potential. It is also shown that the nonuniqueness is related to the assumption that two different extensions of the differential geometry are possible when the extra one-form basis χ is introduced to define the differential geometry on M4 × Z2. Our reformulation is applied to the standard model based on Connes' color-flavor algebra. A connection between the unimodularity condition and the electric charge quantization is then discussed in the presence or absence of νR.

scholarly journals Ongoing magnetic monopole searches with IceCube

2018 ◽  
Vol 182 ◽  
pp. 02071
Author(s):  
Frederik Lauber
Keyword(s):  
Visible Light ◽  
Particle Physics ◽  
Magnetic Monopole ◽  
Magnetic Charge ◽  
Magnetic Monopoles ◽  
Cherenkov Light ◽  
Light Production ◽  
The Standard Model ◽  
Production Mechanisms ◽  
Luminescence Light

The IceCube collaboration has instrumented a cubic kilometer of ice with 5160 photo-multipliers. While mainly developed to detect Cherenkov light, any visible light can be used to detect particles within the ice. Magnetic monopoles are hypothetical particles predicted by many theories that extend the Standard model of Particle Physics. They are carriers of a single elementary magnetic charge. For this particle, different light production mechanisms dominate from direct Cherenkov light at highly relativistic velocities (> 0:76 c), indirect Cherenkov light at mildly relativistic velocities (> 0:5 c to 0:76 c), luminescence light at low relativistic velocities (≳ 0:1 c to 0:5 c), as well as catalysis of proton decay at non relativistic velocities (≲ 0:1 c). For each of this speed ranges, searches for magnetic monopoles at the IceCube experiment are either in progress or they have already set the worlds best limits on the flux of magnetic monopoles. A summary of these searches will be presented, outlining already existing results as well as methods used by the currently conducted searches.

NEW PHYSICS FROM ELECTRIC CHARGE QUANTIZATION?

1991 ◽  
Vol 06 (07) ◽  
pp. 527-529 ◽  
Author(s):  
ROBERT FOOT
Keyword(s):  
Standard Model ◽  
Electric Charge ◽  
New Physics ◽  
Charge Quantization ◽  
The Standard Model

Electric charge quantization is re-examined in the standard model.

Sign in / Sign up

Export Citation Format

Share Document