Results 81 to 90 of about 667,232 (161)

Gaugino mass term for D-branes and Generalized Complex Geometry

Journal of High Energy Physics, 2020
We compute the four-dimensional gaugino mass for a Dp-brane extended in spacetime and wrapping a cycle on the internal geometry in a warped compactification with fluxes.
Mariana Graña, Nicolás Kovensky, Ander Retolaza   +2 more
doaj   +1 more source

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, Diana G. Oldal, Rifan Hardian, Tibor Holtzl, Maged F. Serag, Satoshi Habuchi, Gyorgy Szekely   +6 more
wiley   +1 more source

Open string wavefunctions in flux compactifications

, 2009
We consider compactifications of type I supergravity on manifolds with SU(3) structure, in the presence of RR fluxes and magnetized D9-branes, and analyze the generalized Dirac and Laplace-Beltrami operators associated to the D9-brane worldvolume fields.
Cámara, Pablo G, Marchesano, Fernando
core   +1 more source

Linking Density and Nanoscale Crystallinity to Hydration in Nafion PEMFC Membranes: Insights From Experiment and Molecular Dynamics Simulations

Small Structures, Volume 7, Issue 3, March 2026.
Molecular dynamics and experimental analysis show that higher crystallinity in Nafion enhances molecular packing, thereby increasing effective density. A proposed model bridges experimental and molecular‐scale observations by quantitatively linking water uptake to density variations, offering a predictive framework for optimising hydration and ...
Mateja Jovanović, Nicolas Bernhard, Matthias Baldofski, Marcin Rybicki, Miljan Dašić, Igor Stanković   +5 more
wiley   +1 more source

Analytics of type IIB flux vacua and their mass spectra

Journal of High Energy Physics, 2023
We analyze the tree-level potential of type IIB flux compactifications in warped Calabi-Yau orientifolds, in regions of weak coupling and moderately large complex structure.
Thibaut Coudarchet, Fernando Marchesano, David Prieto, Mikel A. Urkiola   +3 more
doaj   +1 more source

The DNA of Calabi–Yau Hypersurfaces

Fortschritte der Physik, Volume 74, Issue 2, February 2026.
Abstract Genetic Algorithms are implemented for triangulations of four‐dimensional reflexive polytopes, which induce Calabi–Yau threefold hypersurfaces via Batyrev's construction. These algorithms are shown to efficiently optimize physical observables such as axion decay constants or axion–photon couplings in string theory compactifications.
Nate MacFadden, Andreas Schachner, Elijah Sheridan   +2 more
wiley   +1 more source

Scale separation from O-planes

Journal of High Energy Physics
Orientifold planes play a crucial role in flux compactifications of string theory, and we demonstrate their deep connection to achieving scale-separated solutions.
George Tringas, Timm Wrase
doaj   +1 more source

FTheoryTools: Advancing Computational Capabilities for F‐Theory Research

Fortschritte der Physik, Volume 74, Issue 1, January 2026.
Abstract A primary goal of string phenomenology is to identify realistic four‐dimensional physics within the landscape of string theory solutions. In F‐theory, such solutions are encoded in the geometry of singular elliptic fibrations, whose study often requires particularly challenging and cumbersome computations.
Martin Bies, Miķelis E. Miķelsons, Andrew P. Turner   +2 more
wiley   +1 more source

Profinite direct sums with applications to profinite groups of type ΦR$\Phi _R$

Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We show that the ‘profinite direct sum’ is a good notion of infinite direct sums for profinite modules, having properties similar to those of direct sums of abstract modules. For example, the profinite direct sum of projective modules is projective, and there is a Mackey's formula for profinite modules described using these sums.
Jiacheng Tang
wiley   +1 more source

SO(32) heterotic standard model vacua in general Calabi-Yau compactifications

Journal of High Energy Physics, 2018
We study a direct flux breaking scenario in SO(32) heterotic string theory on general Calabi-Yau threefolds. The direct flux breaking, corresponding to hypercharge flux breaking in the F-theory context, allows us to derive the Standard Model in general ...
Hajime Otsuka, Kenta Takemoto
doaj   +1 more source