scholarly journals An unified cosmological evolution driven by a mass dimension one fermionic field

2019 ◽  
Vol 79 (6) ◽  
Author(s):  
S. H. Pereira ◽  
M. E. S. Alves ◽  
T. M. Guimarães
Keyword(s):  
Cosmological Evolution ◽  
Fermionic Field ◽  
Mass Dimension ◽  
Dimension One

scholarly journals Partition function for a mass dimension one fermionic field and the dark matter halo of galaxies

2019 ◽  
Vol 34 (16) ◽  
pp. 1950126 ◽  
Author(s):  
S. H. Pereira ◽  
Richard S. Costa
Keyword(s):  
Dark Matter ◽  
Partition Function ◽  
Pauli Exclusion Principle ◽  
Dark Matter Halo ◽  
Exclusion Principle ◽  
Galactic Halos ◽  
Fermionic Field ◽  
Time Formalism ◽  
Mass Dimension ◽  
Dimension One

This work studies the finite temperature effects of a mass dimension one fermionic field, sometimes called Elko field. The equilibrium partition function was calculated by means of the imaginary time formalism and the result obtained was the same for a Dirac fermionic field, even though the Elko field does not satisfy a Dirac-like equation. The high and low temperature limits were obtained, and for the last case the degeneracy pressure due to Pauli exclusion principle can be responsible for the dark matter halos around galaxies to be greater than or of the same order of the galaxy radius. Also, for a light particle of about 1.0 eV and a density of just 1 particle per cubic centimeter, the value of the total dark matter mass due to Elko particles is of the same order of a typical galaxy. Such a result satisfactorily explains the dark matter as being formed just by Elko fermionic particles and also the existence of galactic halos that go beyond the observable limit.

scholarly journals Perspectives for an Elko phenomenology using monojets at the 14 TeV LHC

2014 ◽  
Vol 23 (14) ◽  
pp. 1444005 ◽  
Author(s):  
Alexandre Alves ◽  
M. Dias ◽  
F. de Campos
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Higgs Field ◽  
Mass Term ◽  
Missing Energy ◽  
Fermionic Field ◽  
Future Studies ◽  
Mass Dimension ◽  
Dimension One

The aim of this work is to explore the possibility to discover a fermionic field with mass dimension one, the Elko field, in the 14 TeV Large Hadron Collider (LHC), in processes with missing energy and one jet. We explore the possibility of a triple coupling with the Higgs field, generating also a contribution to the Elko mass term, and suggest some possibilities for future studies in this field.

scholarly journals A new class of mass dimension one fermions

2020 ◽  
Vol 476 (2240) ◽  
pp. 20200249 ◽  
Author(s):  
Dharam Vir Ahluwalia
Keyword(s):  
Dark Matter ◽  
Field Energy ◽  
First Principle ◽  
Square Root ◽  
Identity Matrix ◽  
Quantum Fields ◽  
Fermionic Field ◽  
New Class ◽  
Mass Dimension ◽  
Dimension One

These are notes on the square root of a 4 × 4 identity matrix and associated quantum fields of spin one half. The method is illustrated by constructing a new mass dimension one fermionic field. The presented field is local. The field energy is bounded from below. It is argued that these fermions are a first-principle candidate for dark matter with an unsuppressed quartic self-interaction.

scholarly journals Fermionic degeneracy and non-local contributions in flag-dipole spinors and mass dimension one fermions

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Cheng-Yang Lee
Keyword(s):  
Complex Number ◽  
Invariant Theory ◽  
Matrix Transformation ◽  
Fermionic Field ◽  
Temporal Gauge ◽  
Mass Dimension ◽  
Fermionic Fields ◽  
Non Local ◽  
Dimension One ◽  
Non Locality

AbstractWe construct a mass dimension one fermionic field associated with flag-dipole spinors. These spinors are related to Elko (flag-pole spinors) by a one-parameter matrix transformation $${\mathcal {Z}}(z)$$ Z ( z ) where z is a complex number. The theory is non-local and non-covariant. While it is possible to obtain a Lorentz-invariant theory via $$\tau $$ τ -deformation, we choose to study the effects of non-locality and non-covariance. Our motivation for doing so is explained. We show that a fermionic field with $$|z|\ne 1$$ | z | ≠ 1 and $$|z|=1$$ | z | = 1 are physically equivalent. But for fermionic fields with more than one value of z, their interactions are z-dependent thus introducing an additional fermionic degeneracy that is absent in the Lorentz-invariant theory. We study the fermionic self-interaction and the local U(1) interaction. In the process, we obtained non-local contributions for fermionic self-interaction that have previously been neglected. For the local U(1) theory, the interactions contain time derivatives that renders the interacting density non-commutative at space-like separation. We show that this problem can be resolved by working in the temporal gauge. This issue is also discussed in the context of gravity.

scholarly journals Effective lagrangian for a mass dimension one fermionic field in curved spacetime

2018 ◽  
Vol 2018 (2) ◽  
Author(s):  
R.J. Bueno Rogerio ◽  
J.M. Hoff da Silva ◽  
M. Dias ◽  
S.H. Pereira
Keyword(s):  
Curved Spacetime ◽  
Fermionic Field ◽  
Effective Lagrangian ◽  
Mass Dimension ◽  
Dimension One

Cosmology with mass dimension one fields: recent developments

2020 ◽  
Vol 229 (11) ◽  
pp. 2079-2116
Author(s):  
S. H. Pereira ◽  
R. de C. Lima ◽  
M. E. S. Alves ◽  
T. M. Guimarães ◽  
J. F. Jesus ◽  
...  
Keyword(s):  
Mass Dimension ◽  
Recent Developments ◽  
Dimension One

scholarly journals Mass-dimension-one fermions and their gravitational interaction

2019 ◽  
Vol 128 (2) ◽  
pp. 20004 ◽  
Author(s):  
R. J. Bueno Rogerio ◽  
R. de C. Lima ◽  
L. Duarte ◽  
J. M. Hoff da Silva ◽  
M. Dias ◽  
...  
Keyword(s):  
Gravitational Interaction ◽  
Mass Dimension ◽  
Dimension One

scholarly journals Renormalization of a model for spin-1 matter fields

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
Ailier Rivero-Acosta ◽  
Carlos A. Vaquera-Araujo
Keyword(s):  
Lorentz Group ◽  
Homogeneous Lorentz Group ◽  
Mass Dimension ◽  
The One ◽  
Dimension One ◽  
Matter Fields

Abstract In this work, the one-loop renormalization of a theory for fields transforming in the $$(1,0)\oplus (0,1)$$(1,0)⊕(0,1) representation of the Homogeneous Lorentz Group is studied. The model includes an arbitrary gyromagnetic factor and self-interactions of the spin 1 field, which has mass dimension one. The model is shown to be renormalizable for any value of the gyromagnetic factor.

scholarly journals The local vicinity of spin sums for certain mass-dimension-one spinors

2017 ◽  
Vol 118 (1) ◽  
pp. 10003 ◽  
Author(s):  
R. J. Bueno Rogerio ◽  
J. M. Hoff da Silva
Keyword(s):  
Mass Dimension ◽  
Dimension One
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