Results 121 to 130 of about 976,567 (285)
, 1996 We show how spontaneous supersymmetry breaking in the vacuum state of higher-derivative supergravity is transmitted, as explicit soft supersymmetry-breaking terms, to the effective Lagrangian of the standard electroweak model.
Ahmed Hindawi +23 more
core +2 more sources
Asymptotic Behavior of Saxion–Axion System in Stringy Quintessence Model
Fortschritte der Physik, Volume 72, Issue 11, November 2024.Abstract The late time behavior of the slow‐roll parameter in the stringy quintessence model is studied when axion as well as saxion are allowed to move. Even though the potential is independent of the axion at tree level, the axion can move through its coupling to the saxion and the background geometry.
Min‐Seok Seo
wiley +1 more source
Scale hierarchies in particle physics and cosmology
EPJ Web of Conferences, 2018 I describe the phenomenology of a model of supersymmetry breaking in the presence of a tiny (tuneable) positive cosmological constant. It utilises a single chiral multiplet with a gauged shift symmetry, that can be identified with the string dilaton (or ...
Antoniadis I.
doaj +1 more source
Nonlinear N = 2 $$ \mathcal{N}=2 $$ global supersymmetry
Journal of High Energy Physics, 2017 We study the partial breaking of N = 2 $$ \mathcal{N}=2 $$ global supersymmetry, using a novel formalism that allows for the off-shell nonlinear realization of the broken supersymmetry, extending previous results scattered in the literature.
Ignatios Antoniadis +2 more
doaj +1 more source
Inflation and Gauge Mediation in Supersymmetric Gauge Theory
, 2011 We propose a simple high-scale inflationary scenario based on a phenomenologically viable model with direct gauge mediation of low-scale supersymmetry breaking. Hybrid inflation is occurred in a hidden supersymmetry breaking sector. Two hierarchical mass
Nakai, Yuichiro, Sakai, Manabu
core +1 more source
Low energy dynamical supersymmetry breaking simplified. [PDF]
Physical Review D, Particles and fields, 1994 We present a model in which supersymmetry is dynamically broken at comparatively low energies. Previous efforts to construct simple models of this sort have been hampered by the presence of axions.
M. Dine, A. Nelson, Y. Shirman
semanticscholar +1 more source
de Sitter State in Heterotic String Theory
Fortschritte der Physik, Volume 72, Issue 11, November 2024.Abstract Recent no‐go theorems have ruled out four‐dimensional classical de Sitter vacua in heterotic string theory. On the other hand, the absence of a well‐defined Wilsonian effective action and other related phenomena also appear to rule out such time‐dependent vacua with de Sitter isometries, even in the presence of quantum corrections.
Stephon Alexander +4 more
wiley +1 more source
A minimal SU(5) SuperGUT in pure gravity mediation
European Physical Journal C: Particles and Fields, 2019 The lack of evidence for low-scale supersymmetry suggests that the scale of supersymmetry breaking may be higher than originally anticipated. However, there remain many motivations for supersymmetry including gauge coupling unification and a stable dark ...
Jason L. Evans +2 more
doaj +1 more source
Implications of a 125 GeV Higgs boson for the MSSM and low-scale supersymmetry breaking [PDF]
, 2011 Recently, the ATLAS and CMS collaborations have announced exciting hints for a standard model-like Higgs boson at a mass of $\ensuremath{\approx}125\text{ }\text{ }\mathrm{GeV}$.
P. Draper, P. Meade, M. Reece, D. Shih
semanticscholar +1 more source
Species Scale and Primordial Gravitational Waves
Fortschritte der Physik, Volume 72, Issue 6, June 2024.Abstract The species scale is a field‐dependent UV cut‐off for any effective field theory weakly coupled to gravity. In this letter, it is shown that in the context of inflationary cosmology, a detection of primordial gravitational waves will set an upper bound on the decay rate |Λs′/Λs|$|\Lambda ^{\prime }_s/\Lambda _s|$ of the species scale ...
Marco Scalisi
wiley +1 more source