Results 81 to 90 of about 1,110,824 (191)
Journal of High Energy Physics, 2020 Geometric modularity has recently been conjectured to be a characteristic feature of flux vacua with W = 0. This paper provides support for the conjecture by computing motivic modular forms in a direct way for several string compactifications for which ...
Rolf Schimmrigk
doaj +1 more source
Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons
Communications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley +1 more source
Compactifications of Type II supergravities in superspace
Journal of High Energy PhysicsWe propose a way to describe compactifications of Type II supergravities with fluxes directly from superspace. The on-shell supergravity constraints used are the ones that arise naturally from the pure spinor superstring.
Osvaldo Chandia, Brenno Carlini Vallilo
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Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking [PDF]
, 2005 We present an explicit calculation of the spectrum of a general class of string models, corresponding to Calabi-Yau flux compactifications with h1,2 > h1,1 > 1 with leading perturbative and non-perturbative corrections, in which all geometric moduli are ...
J. Conlon, F. Quevedo, K. Suruliz
semanticscholar +1 more source
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Symmetric fluxes and small tadpoles
Journal of High Energy Physics, 2023 The analysis of type IIB flux vacua on warped Calabi-Yau orientifolds becomes considerably involved for a large number of complex structure fields.
Thibaut Coudarchet +3 more
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Harnessing Macromolecular Crowding of Proteins for Engineering Sustainable Nanofiltration Membranes
SusMat, Volume 6, Issue 2, April 2026.Novel biodegradable and solvent‐resistant nanofiltration membranes fabricated by harnessing the macromolecular crowding of zein protein induced by solvent interactions. Scattering experiments and molecular dynamics simulations confirmed the macromolecular crowding formation and revealed the structural characteristics of the membranes.
Claudia Oviedo +6 more
wiley +1 more source
Bubbles of nothing in flux compactifications [PDF]
Physical Review D, 2010 We construct a simple AdS_4 x S^1 flux compactification stabilized by a complex scalar field winding the extra dimension and demonstrate an instability via nucleation of a bubble of nothing. This occurs when the Kaluza -- Klein dimension degenerates to a point, defining the bubble surface. Because the extra dimension is stabilized by a flux, the bubble
Blanco-Pillado, Jose J. +1 more
openaire +2 more sources
Journal of High Energy Physics, 2021 We examine the mechanism of moduli stabilization by fluxes in the limit of a large number of moduli. We conjecture that one cannot stabilize all complex-structure moduli in F-theory at a generic point in moduli space (away from singularities) by fluxes ...
Iosif Bena +3 more
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Noncommutative Compactifications of Type I Strings on Tori with Magnetic Background Flux [PDF]
, 2000 We construct six- and four-dimensional toroidal compactifications of the Type I string with magnetic flux on the D-branes. The open strings in this background probe a noncommutative internal geometry.
Blumenhagen, Ralph +3 more
core +2 more sources