Electric charge quantization in SU(3)c x SU(n)L x U(1)Y gauge models

We obtain electric charge quantization in the context of models based on the gauge symmetry group SU (3)c ⊗ U (4)L ⊗U(1)X. The gauge models study include three families to cancel out anomalies and a set of scalar fields to break the symmetry spontaneously. To show the electric charge quantization, we use classical symmetry conditions and quantum chiral anomaly conditions.

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ELECTRIC CHARGE QUANTIZATION AND VECTOR-LIKE FERMIONS

Modern Physics Letters A ◽

10.1142/s0217732390002213 ◽

1990 ◽

Vol 05 (24) ◽

pp. 1947-1949 ◽

Cited By ~ 2

Author(s):

ROBERT FOOT

Keyword(s):

Standard Model ◽

Electric Charge ◽

Life Time ◽

New Physics ◽

Beyond The Standard Model ◽

Simple Method ◽

Gauge Models ◽

Flavor Changing ◽

Charge Quantization ◽

The Standard Model

In extended gauge models with gauge group G, electric charge quantization is not always an automatic consequence of the consistency of the theory. Exotic fermions which have SU (3) ⊗ SU (2) L ⊗ U (1) invariant mass terms can provide a simple method for preserving the charge quantization feature of the standard model. This procedure is applied to the segregated isospin model.This approach indicates that precision measurements of the τ-lepton life-time and rare flavor-changing neutral processes may provide the first indications of new physics beyond the standard model.

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Index theorem for non-supersymmetric fermions coupled to a non-Abelian string and electric charge quantization

Modern Physics Letters A ◽

10.1142/s0217732318500530 ◽

2018 ◽

Vol 33 (09) ◽

pp. 1850053

Author(s):

M. Shifman ◽

A. Yung

Keyword(s):

Gauge Group ◽

Electric Charge ◽

Index Theorem ◽

Index Theorems ◽

Zero Modes ◽

Left Handed ◽

Charge Quantization ◽

Supersymmetric Theories ◽

String Background

Non-Abelian strings are considered in non-supersymmetric theories with fermions in various appropriate representations of the gauge group U[Formula: see text]. We derive the electric charge quantization conditions and the index theorems counting fermion zero modes in the string background both for the left-handed and right-handed fermions. In both cases we observe a non-trivial [Formula: see text] dependence.

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An Alternative Approach to the Electric Charge Quantization with Non-global Potentials

Brazilian Journal of Physics ◽

10.1007/s13538-012-0065-2 ◽

2012 ◽

Vol 42 (1-2) ◽

pp. 120-124 ◽

Cited By ~ 1

Author(s):

Fabricio Augusto Barone Rangel ◽

Giancarlo Thales Camilo da Silva ◽

José Abdalla Helayël-Neto

Keyword(s):

Electric Charge ◽

Charge Quantization ◽

Alternative Approach

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

International Journal of Modern Physics A ◽

10.1142/s0217751x01004876 ◽

2001 ◽

Vol 16 (19) ◽

pp. 3203-3216 ◽

Cited By ~ 2

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.

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