Abel, Steven Coudarchet, Thibaut Partouche, Hervé

We analyze the stability of moduli fields at the quantum level in open-string theory realizing the spontaneous breaking of $\mathcal{N}=2$ supersymmetry in four dimensions. This is done by compactifying the type IIB orientifold theory on $T^2\times T^4/\mathbb{Z}_2$, with Scherk-Schwarz supersymmetry breaking implemented along $T^2$. Our analysis i...

Mourad, J. Sagnotti, A.

We address some general issues related to torsion and Noether currents for Fermi fields in the presence of boundaries, with emphasis on the conditions that guarantee charge conservation. We also describe exact solutions of these boundary conditions and some implications for string vacua with broken supersymmetry.

Dudas, Emilian Lamba, Priyanka Vempati, Sudhir K.

We consider an explicit effective field theory example based on the Bousso-Polchinski framework with a large number N of hidden sectors contributing to supersymmetry breaking. Each contribution comes from four form quantized fluxes, multiplied by random couplings. The soft terms in the observable sector in this case become random variables, with me...

Sirunyan, Albert M Tumasyan, Armen Adam, Wolfgang Ambrogi, Federico Bergauer, Thomas Brandstetter, Johannes Dragicevic, Marko Erö, Janos Escalante Del Valle, Alberto Flechl, Martin
...

A combination of four searches for new physics involving signatures with at least one photon and large missing transverse momentum, motivated by generalized models of gauge-mediated supersymmetry (SUSY) breaking, is presented. All searches make use of proton-proton collision data at $\sqrt{s}=$ 13 TeV, which were recorded with the CMS detector at t...

Mourad, J. Sagnotti, A.

"Brane supersymmetry breaking" is a peculiar phenomenon that can occur in perturbative orientifold vacua. It results from the simultaneous presence, in the vacuum, of non-mutually BPS sets of BPS branes and orientifolds, which leave behind a net tension and thus a runaway potential, but no tachyons. In the simplest ten-dimensional realization, the ...

Partouche, Hervé de Vaulchier, Balthazar

When supersymmetry is spontaneously broken at tree level, the spectrum of the heterotic string compactified on orbifolds of tori contains an infinite number of potentially tachyonic modes. We show that this implies instabilities of Minkowski spacetime, when the scale of supersymmetry breaking is of the order of the string scale. We derive the phase...

Abel, Steven Bonnefoy, Quentin Chowdhury, Debtosh
Published in
Journal of High Energy Physics

We present BPS solutions to a general class of Wess-Zumino models which ex- tend previous results in the literature. We discuss their relation to amplitudes on threshold, and their application to scalar domain walls in Supersymmetric QCD. We also find partial expressions for Wess-Zumino models with softly broken supersymmetry.

Bena, Iosif Buchel, Alex Lüst, Severin

Two recent results indicate that the addition of supersymmetry-breaking ingredients can destabilize the Klebanov-Strassler warped deformed conifold throat. The first comes from an analytic treatment of the interaction between anti-D3 branes and the complex-structure modulus corresponding to the deformation of the conifold [arXiv:1809.06861]. The se...

Partouche, Hervé de Vaulchier, Balthazar
Published in
Journal of High Energy Physics

We consider phase transitions occurring in four-dimensional heterotic orbifold models, when the scale of spontaneous breaking of N\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{d...

Abel, Steven Dudas, Emilian Lewis, Daniel Partouche, Hervé
Published in
Journal of High Energy Physics

We construct type I string models with supersymmetry broken by compactifi- cation that are non-tachyonic and have exponentially small effective potential at one-loop. All open string moduli can be stabilized, while the closed string moduli remain massless at one-loop. The backgrounds of interest have rigid Wilson lines by the use of stacked branes,...