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On the basis of previous work on chiral gauged fermions on a lattice, we discuss the lattice-regularization of the standard model by introducing two Weyl fields interacting with quarks and leptons. These interactions form massive bound…

High Energy Physics - Lattice · Physics 2009-10-31 She-Sheng Xue

We propose a model of dynamical symmetry breaking, in which a new type of fundamental scalar fields of zero mass-dimension mediate the couplings of fermions to the gravitational field, represented here as a tetrad field in the same manner…

High Energy Physics - Theory · Physics 2022-10-03 J. Miller , M. A. Zubkov

We study the Standard Model (SM) in Weyl conformal geometry. This embedding is natural and truly minimal {\it with no new fields} required beyond the SM spectrum and Weyl geometry. The action inherits a gauged scale symmetry $D(1)$ (known…

High Energy Physics - Phenomenology · Physics 2022-11-24 D. M. Ghilencea

U(4) local transformations on the four Weyl spinors forming the isospin doublet of Dirac fermions are assumed as symmetries of the standard model. With the Lorentz transformations considered simultaneously, the symmetry group is enlarged in…

High Energy Physics - Phenomenology · Physics 2025-01-06 Lu Yang

It has been claimed in a series of papers that scalar fields with a fourth-order Lagrangian $\sim(\Box\varphi)^2$ can solve the cosmological constant problem by canceling the loop contributions from standard model fields, and that their…

High Energy Physics - Theory · Physics 2026-03-09 James M. Cline , Anamaria Hell

We discuss the vacuum energy density term resulting from the spontaneous breakdown of the electroweak gauge symmetry, in the Higgs Mechanism. We alternatively expand the scalar field at one of the degenerate states that lie outside the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Alp Deniz Özer

We present a classically equivalent reformulation of the Standard Model. In this framework, the Higgs doublet is recast as a $2\times2$ matrix and right-handed fermion singlets are organized into novel doublets. This restructuring reveals a…

High Energy Physics - Theory · Physics 2025-12-08 Peng Huang

We discuss the connection between the vacuum energy problem and the number of dark matter sectors and its relation to the cancellation of quadratic divergences both in the cosmological constant and simultaneously in the polarization tensor…

High Energy Physics - Phenomenology · Physics 2023-03-15 S. S. Afonin , A. A. Andrianov , V. A. Andrianov , D. Espriu

We generalize the standard model of particle physics such it displays global scale invariance. The gravitational action is also suitably modified such that it respects this symmetry. This model is interesting since the cosmological constant…

Astrophysics · Physics 2009-06-23 Pankaj Jain , Subhadip Mitra , Naveen K. Singh

We propose a simple model that provides a dynamical cancellation mechanism of the vacuum energy density appearing either in the form of a bare cosmological constant, quantum fluctuations of matter fields or the result of phase transitions.…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-23 Philippe Brax , Patrick Valageas

We introduce Weyl's scale symmetry into the standard model (SM) as a local symmetry. This necessarily introduces gravitational interactions in addition to the local scale invariance group \tilde U(1) and the SM groups SU(3) X SU(2) X U(1).…

High Energy Physics - Theory · Physics 2009-07-30 Hitoshi Nishino , Subhash Rajpoot

Spontaneously broken Abelian gauge symmetries can explain the fermion mass hierarchies of the minimal supersymmetric standard model. In most cases it is assumed that the $U(1)_H$ symmetry is anomalous. However, non-anomalous models are also…

High Energy Physics - Phenomenology · Physics 2007-05-23 Enrico Nardi

We propose a model with a compensating scalar field whose back reaction to the cosmological curvature cancels possible vacuum energy density down to the terms of the order of the time dependent critical energy density. Thus the model…

Astrophysics · Physics 2016-08-30 A. D. Dolgov , M. Kawasaki

The postulate of universal local Weyl scaling (conformal) symmetry modifies both general relativity and the Higgs scalar field model. The conformal Higgs model (CHM) acquires a cosmological effect that fits observed accelerating Hubble…

General Relativity and Quantum Cosmology · Physics 2022-02-02 R. K. Nesbet

We present a novel extension of the Standard Model which fulfills the multiple-point principle without contradicting the Higgs particle mass measurement. In the model, the scalar potential has two minima where the scalar field has vacuum…

High Energy Physics - Phenomenology · Physics 2017-06-21 Naoyuki Haba , Toshifumi Yamada

The Hermitian matrix model with general linear symmetry is argued to decouple into a finite unitary matrix model that contains metastable multidimensional lattice configurations and a fermion determinant. The simplest metastable state is a…

High Energy Physics - Theory · Physics 2010-07-20 Chris Belyea

We construct a Weyl x SU(2)_L x U(1)_Y invariant theory by extending four-dimensional Weyl quadratic gravity with Weyl-invariant scalar, fermion, Yukawa and gauge sectors. The quadratic structure (R^tilde - mu^2 |phi|^2)^2 allows the Weyl…

High Energy Physics - Phenomenology · Physics 2026-05-06 Hao-Qian Peng , Yun-Tao Gu , Yu-Xiao Liu

In spite of its many successes, the Standard Model makes many empirical assumptions in the Higgs and fermion sectors for which a deeper theoretical basis is sought. Starting from the usual gauge symmetry $u(1) \times su(2) \times su(3)$…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. M. Chan , S. T. Tsou

A mechanism of radiatively induced breaking of the conformal symmetry in the Standard Model is suggested. The system of one scalar (Higgs) and one fermion (top-quark) fields with Yukawa and $\phi^4$ interactions is considered. The infrared…

High Energy Physics - Phenomenology · Physics 2014-11-20 A. B. Arbuzov , V. N. Pervushin , R. G. Nazmitdinov , A. E. Pavlov , A. F. Zakharov

Peering in from the outside, $\mathbb{A} := \mathbb{R}\otimes\mathbb{C}\otimes\mathbb{H}\otimes\mathbb{O}$ looks to be an ideal mathematical structure for particle physics. It is 32 $\mathbb{C}$-dimensional: exactly the size of one full…

High Energy Physics - Phenomenology · Physics 2022-09-28 N. Furey , M. J. Hughes