Results 21 to 30 of about 179 (141)
Tachyonic de Sitter Solutions of 10d Type II Supergravities
Fortschritte der Physik, Volume 69, Issue 7, July 2021., 2021 Abstract Cosmological models of the early or late universe exhibit (quasi) de Sitter space‐times with different stability properties. Considering models derived from string theory, the swampland program does not provide for now a definite characterisation of this stability.
David Andriot
wiley +1 more source
String (Gravi)photons, “Dark Brane Photons”, Holography and the Hypercharge Portal
Fortschritte der Physik, Volume 69, Issue 6, June 2021., 2021 Abstract The mixing of graviphotons and dark brane photons to the Standard Model hypercharge is analyzed in full generality, in weakly‐coupled string theory. Both the direct mixing as well as effective terms that provide mixing after inclusion of SM corrections are estimated to lowest order.
P. Anastasopoulos +3 more
wiley +1 more source
On the Interpretation of Nonresonant Phenomena at Colliders
Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021 With null results in resonance searches at the LHC, the physics potential focus is now shifting towards the interpretation of nonresonant phenomena. An example of such shift is the increased popularity of the EFT programme. We can embark on such programme owing to the good integrated luminosity and an excellent understanding of the detectors, which ...
Miguel G. Folgado +2 more
wiley +1 more source
Linking light scalar modes with a small positive cosmological constant in string theory
Journal of High Energy Physics, 2017 Based on the studies in Type IIB string theory phenomenology, we conjecture that a good fraction of the meta-stable de Sitter vacua in the cosmic stringy landscape tend to have a very small cosmological constant Λ when compared to either the string scale
S.-H. Henry Tye, Sam S.C. Wong
doaj +1 more source
High quality axion via a doubly composite dynamics
Journal of High Energy Physics, 2022 We explore a new framework that furnishes a mechanism to simultaneously address the electroweak naturalness problem and the axion high quality problem. The framework is based on a doubly composite dynamics where the second confinement takes place after ...
Seung J. Lee +2 more
doaj +1 more source
Journal of High Energy Physics, 2020 We present a mechanism for realizing hybrid inflation using two axion fields with a purely non-perturbatively generated scalar potential. The structure of the scalar potential is highly constrained by the discrete shift symmetries of the axions.
Federico Carta +3 more
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Some properties of the QQq-quark potential in string models
Journal of High Energy Physics, 2021 We propose a string theory construction which allows us to study properties of the potential of two heavy quarks coupled to a light quark. In such a case, the potential is a function of separation between the heavy quarks.
Oleg Andreev
doaj +1 more source
LHC phenomenology and cosmology of string-inspired intersecting D-brane models
Physical Review D, 2012 Matching version to be published in Physical Review D. arXiv admin note: text overlap with arXiv:0808.1405, arXiv:astro-ph/0205116, arXiv:hep-ph/0305075, arXiv:astro-ph/0406663, arXiv:hep-ph/0411125 by other ...
Anchordoqui, Luis A. +6 more
openaire +3 more sources
Journal of High Energy Physics, 2019 A novel non-minimal interaction of neutral right-handed fermion and abelian gauge field in the covariant Θ-exact noncommutative standard model (NCSM) which is invariant under Very Special Relativity (VSR) Lorentz subgroup, opens an avenue to study the ...
J. Selvaganapathy +2 more
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A CMB Millikan experiment with cosmic axiverse strings
Journal of High Energy Physics, 2020 We study axion strings of hyperlight axions coupled to photons. Hyperlight axions — axions lighter than Hubble at recombination — are a generic prediction of the string axiverse.
Prateek Agrawal, Anson Hook, Junwu Huang
doaj +1 more source