Results 31 to 40 of about 179 (141)
Confronting Dual Models of the Strong Interaction [PDF]
, 2021 Studies of the mathematical properties of Regge-pole and dual amplitudes are important both for their applications in high energy phenomenology and in their generalizations to strings, superstrings, branes, and other theoretical developments.
Ridkokasha, I., I. Ridkokasha
core +1 more source
Resolving the (g − 2) μ discrepancy with F $$ \mathcal{F} $$ –SU(5) intersecting D-branes
Journal of High Energy Physics, 2021 A discrepancy between the measured anomalous magnetic moment of the muon (g − 2) μ and computed Standard Model value now stands at a combined 4.2σ following experiments at Brookhaven National Lab (BNL) and the Fermi National Accelerator Laboratory (FNAL).
Joseph L. Lamborn +3 more
doaj +1 more source
Thraxions: ultralight throat axions
Journal of High Energy Physics, 2019 We argue that a new type of extremely light axion is generically present in the type IIB part of the string theory landscape. Its mass is suppressed by the third power of the warp factor of a strongly warped region (Klebanov-Strassler throat), suggesting
Arthur Hebecker +3 more
doaj +1 more source
Superheavy dark matter from string theory
Journal of High Energy Physics, 2021 Explicit string models which can realize inflation and low-energy supersymmetry are notoriously difficult to achieve. Given that sequestering requires very specific configurations, supersymmetric particles are in general expected to be very heavy ...
Rouzbeh Allahverdi +3 more
doaj +1 more source
No-go theorems for ekpyrosis from ten-dimensional supergravity
Journal of High Energy Physics, 2018 In this note we investigate whether the new ekpyrotic scenario can be embedded into ten-dimensional supergravity. We use that the scalar potential obtained from flux compactifications of type II supergravity with sources has a universal scaling with ...
Kunihito Uzawa
doaj +1 more source
Fortschritte der Physik, Volume 68, Issue 11-12, December 2020., 2020 Abstract We analyze to which extent the KKLT proposal for the construction of de Sitter vacua in string theory is quantitatively controlled. Our focus is on the quality of the 10d supergravity approximation. As our main finding, we uncover and quantify an issue which one may want to call the “singular‐bulk problem”.
Xin Gao +2 more
wiley +1 more source
Stability and vacuum energy in open string models with broken supersymmetry
Journal of High Energy Physics, 2019 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.
Steven Abel +3 more
doaj +1 more source
Explicit soft supersymmetry breaking in the heterotic M-theory B − L MSSM
Journal of High Energy Physics, 2021 The strongly coupled heterotic M-theory vacuum for both the observable and hidden sectors of the B − L MSSM theory is reviewed, including a discussion of the “bundle” constraints that both the observable sector SU(4) vector bundle and the hidden sector ...
Anthony Ashmore +2 more
doaj +1 more source
Null Fluid Collapse in Rastall Theory of Gravity
Annalen der Physik, Volume 532, Issue 10, October 2020., 2020 According to general relativity, gravitational collapse of a massive star ends in a spacetime singularity. This is an extreme event that could be either hidden by a (black hole) horizon or visible to the rest of the universe (naked singularity). This phenomenon is studied within the framework of Rastall gravity and the results are compared to the ...
Amir Hadi Ziaie, Yaser Tavakoli
wiley +1 more source
UV Shadows in EFTs: Accidental Symmetries, Robustness and No‐Scale Supergravity
Fortschritte der Physik, Volume 68, Issue 10, October 2020., 2020 Abstract We argue that accidental approximate scaling symmetries are robust predictions of weakly coupled string vacua, and show that their interplay with supersymmetry and other (generalised) internal symmetries underlies the ubiquitous appearance of no‐scale supergravities in low‐energy 4D EFTs.
C. P. Burgess +4 more
wiley +1 more source