Results 51 to 60 of about 1,110,824 (191)
Reviews of Modern Physics, 2007 We review recent work in which compactifications of string and M theory are constructed in which all scalar fields (moduli) are massive, and supersymmetry is broken with a small positive cosmological constant, features needed to reproduce real world physics.
Douglas, Michael R., Kachru, Shamit
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đť’© = 1 SCFTs from F-theory on Orbifolds
Journal of High Energy Physics, 2023 We study four-dimensional superconformal field theories living on the worldvolume of D3 branes probing minimally-supersymmetric F-theory backgrounds, focusing on the case of orbi-orientifold setups with and without 7-branes.
Simone Giacomelli, Raffaele Savelli
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Compactifications of ADE conformal matter on a torus
Journal of High Energy Physics, 2018 In this paper we study compactifications of ADE type conformal matter, N M5 branes probing ADE singularity, on torus with flux for global symmetry. We systematically construct the four dimensional theories by first going to five dimensions and studying ...
Hee-Cheol Kim +3 more
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Conifold Transitions in M-theory on Calabi-Yau Fourfolds with Background Fluxes [PDF]
, 2012 We consider topology changing transitions for M-theory compactifications on Calabi-Yau fourfolds with background G-flux. The local geometry of the transition is generically a genus g curve of conifold singularities, which engineers a 3d gauge theory with
Intriligator, Kenneth +4 more
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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
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Nothing is certain in string compactifications
Journal of High Energy Physics, 2020 A bubble of nothing is a spacetime instability where a compact dimension collapses. After nucleation, it expands at the speed of light, leaving “nothing” behind.
Iñaki GarcĂa Etxebarria +3 more
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de Sitter vacua and supersymmetry breaking in six-dimensional flux compactifications [PDF]
, 2016 We consider six-dimensional supergravity with Abelian bulk flux compactified on an orbifold. The effective low-energy action can be expressed in terms of N=1 chiral moduli superfields with a gauged shift symmetry.
W. Buchmuller +3 more
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The spectra of type IIB flux compactifications at large complex structure [PDF]
, 2015 A bstractWe compute the spectra of the Hessian matrix, â„‹$$ \mathrm{\mathscr{H}} $$, and the matrix â„ł$$ \mathrm{\mathcal{M}} $$ that governs the critical point equation of the low-energy effective supergravity, as a function of the complex structure and ...
Callum R. Brodie, M. Marsh
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Moduli space holography and the finiteness of flux vacua
Journal of High Energy Physics, 2021 A holographic perspective to study and characterize field spaces that arise in string compactifications is suggested. A concrete correspondence is developed by studying two-dimensional moduli spaces in supersymmetric string compactifications.
Thomas W. Grimm
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Hierarchies from fluxes in string compactifications [PDF]
Physical Review D, 2002 Warped compactifications with significant warping provide one of the few known mechanisms for naturally generating large hierarchies of physical scales. We demonstrate that this mechanism is realizable in string theory, and give examples involving orientifold compactifications of IIB string theory and F-theory compactifications on Calabi-Yau four-folds.
Giddings, Steven B. +2 more
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