Results 11 to 20 of about 319 (139)
Phenomenology of mixed modulus-anomaly mediation in fluxed string compactifications and brane models [PDF]
Journal of High Energy Physics, 2005 20 pages, 15 figures, some notations are changed, typos are corrected and discussions on the CP phase from $\mu$ and B are ...
Choi, K Choi, Ki-Woon +2 more
openaire +5 more sources
Asymptotic scalar field cosmology in string theory
Journal of High Energy Physics, 2022 Asymptotic (late-time) cosmology depends on the asymptotic (infinite-distance) limits of scalar field space in string theory. Such limits feature an exponentially decaying potential V ~ exp(−cϕ) with corresponding Hubble scale H ~ ϕ ̇ 2 + 2 V $$ \sqrt ...
Tom Rudelius
doaj +1 more source
Fine-tuned vs. natural supersymmetry: what does the string landscape predict?
Journal of High Energy Physics, 2022 A vast array of (metastable) vacuum solutions arise from string compactifications, each leading to different 4-d laws of physics. The space of these solutions, known as the string landscape, allows for an environmental solution to the cosmological ...
Howard Baer +3 more
doaj +1 more source
Radiative natural supersymmetry emergent from the string landscape
Journal of High Energy Physics, 2022 In string theory with flux compactifications, anthropic selection for structure formation from a discretuum of vacuum energy values provides at present our only understanding of the tiny yet positive value of the cosmological constant.
Howard Baer +3 more
doaj +1 more source
On asymptotic dark energy in string theory
Journal of High Energy Physics, 2023 We examine bounds on accelerated expansion in asymptotic regions of the moduli space in string theory compactifications to four spacetime dimensions. While there are conjectures that forbid or constrain accelerated expansion in such asymptotic regions ...
Sera Cremonini +4 more
doaj +1 more source
Journal of High Energy Physics, 2023 We have constructed all the three-family N $$ \mathcal{N} $$ = 1 supersymmetric Pati-Salam models from intersecting D6-branes, and obtained 33 independent models in total.
Tianjun Li, Rui Sun, Lina Wu
doaj +1 more source
Hidden Sectors from Multiple Line Bundles for the B−L$B-L$ MSSM
Fortschritte der Physik, Volume 70, Issue 7-8, August 2022., 2022 Abstract We give a formalism for constructing hidden sector bundles as extensions of sums of line bundles in heterotic M‐theory. Although this construction is generic, we present it within the context of the specific Schoen threefold that leads to the physically realistic B−L$B-L$ MSSM model.
Anthony Ashmore +2 more
wiley +1 more source
The cosmological constant is probably still zero
Journal of High Energy Physics, 2023 We consider a wide class of four-dimensional effective field theories in which gravity is coupled to multiple four-forms and their dual scalar fields, with membrane sources charged under the corresponding three-form potentials.
Yang Liu +2 more
doaj +1 more source