Results 111 to 120 of about 5,749 (216)

de Sitter State in Heterotic String Theory

open access: yesFortschritte 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

Duality after supersymmetry breaking [PDF]

open access: yes, 1998
Starting with two supersymmetric dual theories, we imagine adding a chiral perturbation that breaks supersymmetry dynamically. At low energy we then get two theories with soft supersymmetry-breaking terms that are generated dynamically.
Shadmi, Yael, Cheng, Hsin-Chia
core  

A unified approach to supersymmetry breaking [PDF]

open access: yesPhysics Letters B, 2012
General formulae for the soft SUSY breaking terms, valid in any SUGRA context, were derived in the mid-nineties. Since SUSY is not expected to have quantum anomalies, they should be valid in the quantum theory and be RG invariant down to the soft SUSY breaking scale. This observation enables us to give a uniform treatment of all phenomenological models
openaire   +2 more sources

Species Scale and Primordial Gravitational Waves

open access: yesFortschritte 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

Neutrino masses and lepton flavour violating phenomena in the MSSM [PDF]

open access: yes, 2007
The most general supersymmetric model with minimal particle content and an additional discrete Ƶ(_3) symmetry, which allows lepton number violating terms, is considered. In this model, we calculate at the level of one-loop the resulting Majorana neutrino
Rimmer , Steven
core  

Search for supersymmetry at √s= 8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector [PDF]

open access: yes, 2014
A search for strongly produced supersymmetric particles is conducted using signatures involving multiple energetic jets and either two isolated leptons (e or μ) with the same electric charge, or at least three isolated leptons.
Farrington, Sinead   +8 more
core   +1 more source

Exploring T‐Duality for Self‐Dual Fields

open access: yesFortschritte der Physik, Volume 72, Issue 5, May 2024.
Abstract Avatars of T‐duality within Sen's formalism for self‐dual field strengths in various dimensions are studied. This formalism is shown to naturally accommodate the T‐duality relation between Type IIA/IIB theories when compactified on a circle without the need for imposing the self‐duality constraint by hand, as is usually done. The study of this
Subhroneel Chakrabarti   +1 more
wiley   +1 more source

Spontaneous supersymmetry breaking in the 2d N=1 Wess-Zumino model [PDF]

open access: yes, 2012
We study the phase diagram of the two-dimensional N = 1 Wess-Zumino model using Wilson fermions and the fermion loop formulation. We give a complete non-perturbative determination of the ground state structure in the continuum and infinite volume limit ...
Wenger, Urs   +2 more
core  

Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV [PDF]

open access: yes, 2012
Contains fulltext : 111231.pdf (Publisher’s version ) (Open ...
S. O. Holmgren   +999 more
core   +1 more source

Three-form multiplet and supersymmetry breaking

open access: yesJournal of High Energy Physics, 2017
Recently, a nilpotent real scalar superfield V was introduced in [1] as a model for the Goldstino. It contains only two independent component fields, the Goldstino and the auxiliary D-field.
Evgeny I. Buchbinder, Sergei M. Kuzenko
doaj   +1 more source

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