Results 111 to 120 of about 940,438 (233)

Modeling General Asymptotic Calabi–Yau Periods

Fortschritte der Physik, Volume 73, Issue 7, July 2025.
Abstract In the quest to uncovering the fundamental structures that underlie some of the asymptotic Swampland conjectures the authors initiate the general study of asymptotic period vectors of Calabi–Yau manifolds. The strategy is to exploit the constraints imposed by completeness, symmetry, and positivity, which are formalized in asymptotic Hodge ...
Brice Bastian, Thomas W. Grimm, Damian van de Heisteeg   +2 more
wiley   +1 more source

D-Sitter Space: Causal Structure, Thermodynamics, and Entropy

, 2003
We study the entropy of concrete de Sitter flux compactifications and deformations of them containing D-brane domain walls. We determine the relevant causal and thermodynamic properties of these "D-Sitter" deformations of de Sitter spacetimes.
A. Frey, A. Karch, A. Maloney, A. Sen, A. Strominger, A. Strominger, B.S. Acharya, B.S. Acharya, E. Halyo, E. Silverstein, E. Witten, E.E. Flanagan, Eva Silverstein, G.T. Horowitz, G.W. Gibbons, J.M. Maldacena, J.M. Maldacena, L. Dyson, L. Randall, L. Susskind, L. Susskind, L. Susskind, L. Susskind, L. Susskind, M. Gutperle, M.R. Douglas, Michal Fabinger, N. Goheer, N. Itzhaki, N.D. Birrell, P. Kraus, R. Bousso, R. Bousso, S. Hawking, S. Kachru, S. Kachru, S. Kachru, S.R. Coleman, T. Banks, T. Banks, V. Balasubramanian   +40 more
core   +3 more sources

AdS Strings with Torsion: Non-complex Heterotic Compactifications [PDF]

, 2005
Combining the effects of fluxes and gaugino condensation in heterotic supergravity, we use a ten-dimensional approach to find a new class of four-dimensional supersymmetric AdS compactifications on almost-Hermitian manifolds of SU(3) structure ...
A. Gray, A. Gray, A. Gray, Andrew R. Frey, C. M. Hull, J. Polchinski, M. Nakahara, Matthew Lippert, R. Grunewald, R. L. Bryant, S. Carroll, S. Chiossi   +11 more
core   +2 more sources

Nuclear magnetic resonance properties of silica glass under pressure up to 2 Mbar: A view from ab initio calculations

Journal of the American Ceramic Society, Volume 108, Issue 7, July 2025.
Abstract The structures of silica (SiO2) glasses at high pressure provide insight into the thermo‐mechanical properties of chemically complex amorphous oxides upon stress, compression, and indentation. While much of our knowledge on glass structures has been garnered from high‐resolution solid‐state nuclear magnetic resonance (NMR) by probing the ...
Jae‐Hyeon Parq, Yoo Soo Yi, Sang‐Mook Lee, Jaejun Yu, Sung Keun Lee   +4 more
wiley   +1 more source

The tadpole problem

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, Johan Blåbäck, Mariana Graña, Severin Lüst   +3 more
doaj   +1 more source

Model Building with F-Theory

, 2011
Despite much recent progress in model building with D-branes, it has been problematic to find a completely convincing explanation of gauge coupling unification.
Donagi, Ron, Wijnholt, Martijn
core   +1 more source

Warped branches of flux compactifications [PDF]

Physical Review D, 2012
We consider Freund-Rubin-type compactifications which are described by (p+q)-dimensional Einstein gravity with a positive cosmological constant and a q-form flux. Using perturbative expansions of Kinoshita's ansatz for warped dS_pxS^q and AdS_pxS^q spacetimes, we obtain analytical solutions describing the warped branches and their respective phase ...
openaire   +3 more sources

Weakly-coupled IIA flux compactifications [PDF]

Journal of High Energy Physics, 2008
We study compactifications of type IIA string theory on Calabi-Yau manifolds that are mirror to a subset of the type IIB LARGE-volume models. A combination of flux, alpha' corrections and non-perturbative effects stabilises the moduli in a non-supersymmetric AdS vacuum.
Palti, E, Tasinato, G, Ward, J
openaire   +4 more sources

Structure of hyperbolic polynomial automorphisms of C2${\mathbb {C}^2}$ with disconnected Julia sets

Proceedings of the London Mathematical Society, Volume 130, Issue 6, June 2025.
Abstract For a hyperbolic polynomial automorphism of C2$\mathbb {C}^2$ with a disconnected Julia set, and under a mild dissipativity condition, we give a topological description of the components of the Julia set. Namely, there are finitely many “quasi‐solenoids” that govern the asymptotic behavior of the orbits of all nontrivial components.
Romain Dujardin, Mikhail Lyubich
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