Results 51 to 60 of about 1,088 (220)
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
O‐Plane Backreaction and Scale Separation in Type IIA Flux Vacua
Fortschritte der Physik, Volume 68, Issue 6, June 2020., 2020 Abstract We construct AdS4 flux vacua of type IIA string theory in the supergravity (large volume, small ) regime, including the backreaction of O6‐planes. Our solutions are the localized versions of the smeared solutions on Calabi‐Yau orientifolds studied by DeWolfe, Giryavets, Kachru and Taylor and in other works.
Daniel Junghans
wiley +1 more source
Supersymmetry and Brane Cosmology [PDF]
Journal of High Energy Physics, 2002 We consider a five-dimensional brane world scenario where the fifth dimension is compactified on $S^1/Z_2$. We show that the familiar four-dimensional cosmology on our brane is easily recovered during a primordial stage of inflation if supersymmetry is exploited.
Luca Scarabello, Antonio Riotto
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Predicting the Orbifold Origin of the MSSM
Fortschritte der Physik, Volume 68, Issue 5, May 2020., 2020 MSSM‐like string models from the compactification of the heterotic string on toroidal orbifolds (of the kind T6/P) have distinct phenomenological properties, like the spectrum of vector‐like exotics, the scale of supersymmetry breaking, and the existence of non‐Abelian flavor symmetries.
Erik Parr +2 more
wiley +1 more source
How to Make the Physical Parameters Small
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 We study the evolution of the physical parameter values defined at the sub‐planckian energies to values at low energies. The Wilson action is the basis of the research. The presence of the compact extra dimensions has two consequences. The positive point is that the integration over extra dimensions is a promising way to substantially reduce the ...
Sergey G. Rubin +1 more
wiley +1 more source
Dark bubbles: decorating the wall
Journal of High Energy Physics, 2020 Motivated by the difficulty of constructing de Sitter vacua in string theory, a new approach was proposed in arXiv:1807.01570 and arXiv:1907.04268 , where four dimensional de Sitter space was realized as the effective cosmology, with matter and radiation,
Souvik Banerjee +2 more
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Cosmologies inside hyperbolic black holes
Journal of High Energy Physics, 2022 Models with closed FRW cosmologies on the worldvolume of a constant-tension brane inside a black hole provide an interesting setup for studying cosmology holographically.
Simon F. Ross
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Shortcut in codimension-2 brane cosmology in light of GW170817
European Physical Journal C: Particles and Fields, 2023 In this paper, our universe is regarded as a codimension-2 brane embedded in a noncompact six-dimensional Anti-de Sitter (AdS) spacetime. We derive the gravitational horizon radius on the brane under the low-energy approximation, which reflects how the ...
Zi-Chao Lin, Hao Yu, Yu-Xiao Liu
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Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 In this note, we consider particle falling in the black hole with an additional potential. Following the proposal by Susskind (2018), we study the growth rate of the particle’s Rindler momentum, which corresponds to the growth rate of the operator size in the dual chaotic system.
Zhenhua Zhou +2 more
wiley +1 more source
AIP Conference Proceedings, 2006 16 pages, 4 figures, to appear in proceedings of ERE2005, the XXVIII Spanish Relativity Meeting, Oviedo ...
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