Results 91 to 100 of about 89,245 (176)
Journal of Topology, Volume 17, Issue 4, December 2024.Abstract In this paper, we study the left‐orderability of 3‐manifold groups using an enhancement, called recalibration, of Calegari and Dunfield's ‘flipping’ construction, used for modifying Homeo+(S1)$\text{Homeo}_+(S^1)$‐representations of the fundamental groups of closed 3‐manifolds.
Steven Boyer +2 more
wiley +1 more source
Asymptotic Behavior of Saxion–Axion System in Stringy Quintessence Model
Fortschritte der Physik, Volume 72, Issue 11, November 2024.Abstract The late time behavior of the slow‐roll parameter in the stringy quintessence model is studied when axion as well as saxion are allowed to move. Even though the potential is independent of the axion at tree level, the axion can move through its coupling to the saxion and the background geometry.
Min‐Seok Seo
wiley +1 more source
Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory
Journal of High Energy Physics, 2021 We show that four-dimensional de Sitter space is a Glauber-Sudarshan state, i.e. a coherent state, over a supersymmetric solitonic background in full string theory. We argue that such a state is only realized in the presence of temporally varying degrees
Suddhasattwa Brahma +2 more
doaj +1 more source
Advanced Science, Volume 11, Issue 30, August 14, 2024.The computational design and 3D printing of heat‐sink‐integrated self‐heat‐dissipation thermoelectric legs for enhancing power‐generating performance are reported. The viscoelastic inks of n‐type AgBiSe2 and p‐type AgSbTe2 are formulated and 3D‐printed to create the designed architectures with the maximum ZT values of 0.5 and 1.2.
Keonkuk Kim +11 more
wiley +1 more source
Flux compactifications in Einstein-Born-Infeld theories [PDF]
Phys. Rev. D 92 024021 (2015), 2015 We investigate the flux compactification mechanism in simple toy models of Einstein-Born-Infeld theories. These are the direct generalizations of the Einstein-Maxwell flux compactifications that recently gained fame as a toy model for tunneling in the landscape.
arxiv
Supersymmetric Flux Compactifications and Calabi-Yau Modularity [PDF]
arXiv, 2020 Flux compactification of IIB string theory associates special points in Calabi-Yau moduli space to choices of (pairs of) integral three-form fluxes. In this paper, we propose that supersymmetric flux vacua are modular. That is, to a supersymmetric flux vacuum arising in a variety defined over $\mathbb{Q}$, we associate a two-dimensional Galois ...
arxiv
Delineation of basins and hills by Morse theory and critical nets
Transactions in GIS, Volume 28, Issue 5, Page 1254-1289, August 2024.Abstract The delineation of two‐dimensional ascending and descending manifolds represents the theoretical basis for a large number of applications in which functions fx,y are used to describe phenomena related to climate, economy, or engineering, to mention only a few.
Gert W. Wolf
wiley +1 more source
Racetrack potentials and the de Sitter swampland conjectures
Journal of High Energy Physics, 2019 We show that one can find de Sitter critical points (saddle points) in models of flux compactification of Type IIB String Theory without any uplifting terms and in the presence of several moduli.
Jose J. Blanco-Pillado +2 more
doaj +1 more source
Atomic Scale Insights into Reversible Oxygen Storage in Vanadium Oxide Thin Films
ChemPhysChem, Volume 25, Issue 13, July 2, 2024.Scanning tunneling microscopy and X‐ray photoelectron spectroscopy are employed to explore mechanisms of reversible oxygen storage in vanadium−oxide thin films on Pt(111) at the atomic scale. Abstract Monolayer vanadium oxide films grown on Pt(111) can be reversibly switched between an oxygen‐poor and an oxygen‐rich composition, equivalent to V2O3 and ...
Ghada Missaoui +2 more
wiley +1 more source
Limits of conical Kähler–Einstein metrics on rank one horosymmetric spaces
Bulletin of the London Mathematical Society, Volume 56, Issue 7, Page 2514-2528, July 2024.Abstract We consider families of conical Kähler–Einstein metrics on rank one horosymmetric Fano manifolds, with decreasing cone angles along a codimension one orbit. At the limit angle, which is positive, we show that the metrics, restricted to the complement of that orbit, converge to (the pull‐back of) the Kähler–Einstein metric on the basis of the ...
Thibaut Delcroix
wiley +1 more source