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The discovery of the Higgs boson is both a milestone achievement for the Standard Model and an exciting probe of new physics beyond the SM. One of the most important properties of the Higgs is its mass, a number that has proven to be highly…

High Energy Physics - Phenomenology · Physics 2017-02-23 Patrick Draper , Heidi Rzehak

We consider a simple extension of the Standard Model Higgs inflation with one new real scalar field which preserves unitarity up to the Planck scale. The new scalar field (called sigma) completes in the ultraviolet the theory of Higgs…

High Energy Physics - Phenomenology · Physics 2011-01-28 Gian F. Giudice , Hyun Min Lee

A proposal of the cosmological origin of Higgs particles is given. We show, that the Higgs field could be created from the vacuum quantum conformal fluctuation of Anti-de Sitter space-time, the spontaneous breaking of vacuum symmetry, and…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Liao Liu , Shouyong Pei

A one-loop effective potential of the Higgs field on the Schwarzschild background is derived in the framework of a toy model: a SO(N) scalar multiplet interacting with the gauge fields, the SO(N) gauge symmetry being broken by the Higgs…

General Relativity and Quantum Cosmology · Physics 2010-03-25 P. O. Kazinski

We present the first complete next-to-next-to-leading order analysis of the Standard Model Higgs potential. We computed the two-loop QCD and Yukawa corrections to the relation between the Higgs quartic coupling (lambda) and the Higgs mass…

High Energy Physics - Phenomenology · Physics 2015-06-05 Giuseppe Degrassi , Stefano Di Vita , Joan Elias-Miró , José R. Espinosa , Gian F. Giudice , Gino Isidori , Alessandro Strumia

Casimir vacuum energy is divergent. It needs to be regularized. The regularization introduces a renormalization scale which may lead to a scale dependent cosmological constant. We show that the requirement of physical cosmological constant…

High Energy Physics - Phenomenology · Physics 2009-11-07 Xiao-Gang He

We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a ${\rm SO}(6)\to {\rm SO}(4)\times {\rm SO}(2)$ breaking. The main focus of this work is to explicitly compute…

High Energy Physics - Phenomenology · Physics 2018-12-26 Stefania De Curtis , Luigi Delle Rose , Stefano Moretti , Kei Yagyu

If a Higgs field is conformally coupled to gravity, then it can give rise to the scale invariant density perturbations. We make use of this result in a realistic inert Higgs doublet model, where we have a pair of Higgs doublets conformally…

High Energy Physics - Phenomenology · Physics 2018-02-21 Moumita Das , Subhendra Mohanty

A complete cosmological evolution model of the classical scalar field with a Higgs potential is studied and simulated on a computer without the assumption that the Hubble constant is nonnegative. It is shown that with most initial…

General Relativity and Quantum Cosmology · Physics 2021-11-03 Yu. G. Ignat'ev , A. R. Samigullina

General Relativity and Standard Model are considered as a theory of dynamical scale symmetry with definite initial data compatible with the accepted Higgs mechanism. In this theory the Early Universe behaves like a factory of electroweak…

High Energy Physics - Phenomenology · Physics 2009-04-15 A. B. Arbuzov , B. M. Barbashov , A. Borowiec , V. N. Pervushin , S. A. Shuvalov , A. F. Zakharov

The standard electroweak theory of leptons and the conformal groups of spacetime Weyl's transformations are at the core of a general relativistic, conformally covariant scalar tensor theory aimed at the resolution of the most intriguing…

General Relativity and Quantum Cosmology · Physics 2018-02-27 Francesco De Martini

Requiring all massless elementary fields to have conformal scaling symmetry removes a conflict between gravitational theory and the quantum theory of elementary particles and fields. Extending this postulate to the scalar field of the Higgs…

General Physics · Physics 2011-05-12 Robert K. Nesbet

The Higgs boson is often compared to a small ripple on a vast, calm ocean. This "ocean" is the universal Higgs vacuum expectation value, about 246 GeV, permeating all space and generating particle masses. Its remarkable uniformity reflects…

High Energy Physics - Theory · Physics 2026-02-16 Itzhak Bars

The Higgs sector of the Two-Measure Theory (TMT) extension of the electroweak SM (TMSM) is studied in the context of cosmology, where the only non-zero component \varphi(t) of the cosmologically averaged Higgs field plays the role of the…

General Relativity and Quantum Cosmology · Physics 2026-02-02 Alexander B. Kaganovich

The measured values of the Standard Model (SM) parameters favors a shallow metastable electroweak (EW) vacuum surrounded by a deep global AdS or a runaway Minkowski minimum. Furthermore, fine-tuning is the only explanation for the Higgs…

High Energy Physics - Phenomenology · Physics 2020-11-13 Mahdi Torabian

The dynamics of Einstein-conformally coupled Higgs field (EccH) system is investigated near the initial singularities in the presence of Friedman-Robertson--Walker symmetries. We solve the field equations asymptotically up to fourth order…

General Relativity and Quantum Cosmology · Physics 2018-10-17 László B. Szabados , György Wolf

Gravitation and the standard model of particle physics are incorporated within a single conformal scalar-tensor theory, where the scalar field is complex. The Higgs field has a dynamical expectation value, as has the Planck mass, but the…

General Relativity and Quantum Cosmology · Physics 2017-03-24 Meir Shimon

Lattice simulations of five-dimensional gauge theories on an orbifold revealed that there is spontaneous symmetry breaking. Some of the extra-dimensional components of the gauge field play the role of a Higgs field and some of the…

High Energy Physics - Lattice · Physics 2009-04-14 Magdalena Luz , Nikos Irges , Francesco Knechtli

Motivated by the stability of the electroweak Higgs vacuum we consider the possibility that the Standard Model might work up to large scales between about $10^{10}$ GeV and close to the Planck scale. A plausible scenario is an emergent…

High Energy Physics - Phenomenology · Physics 2024-02-23 Steven D. Bass

Our current measurements of the Standard Model parameters imply that the Higgs field resides in a metastable electroweak vacuum, where the vacuum can decay to a lower ground state, with cataclysmic repercussions for our Universe. According…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-23 Andreas Mantziris