Results 81 to 90 of about 2,997,696 (239)
Meteoritics &Planetary Science, EarlyView.Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà +10 more
wiley +1 more source
Calabi–Yau threefolds and moduli of abelian surfaces I [PDF]
, 2001 We describe birational models and decide the rationality/unirationality of moduli spaces $\cal A$d (and $\cal A$levd) of (1, d)-polarized Abelian surfaces (with canonical level structure, respectively) for small values of d.
Sorin Popescu +3 more
core +1 more source
Fano varieties with many selfmaps
Advances in Mathematics, 2008 short version, 19 pages, to appear in Advances in ...
openaire +4 more sources
Rational points on even‐dimensional Fermat cubics
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley +1 more source
Strong Mode Coupling and Maximum Directional Absorption in Reciprocal Bianisotropic Metasurfaces
Nanophotonics, Volume 15, Issue 12, 25 June 2026.Symmetry breaking in q‐BIC dielectric metasurfaces enables strong electromagnetic coupling between electric and magnetic modes, leading to their hybridization and Rabi‐like splitting. This mechanism produces pronounced reciprocal bianisotropy and dual‐band asymmetric absorption under opposite illumination directions, offering a compact framework for ...
L. M. Máñez‐Espina +3 more
wiley +1 more source
Dramatic and Elusive Resonant Lattice Kerker Effect in the Nonlinear Response of Plasmonic Lattices
Nanophotonics, Volume 15, Issue 12, 25 June 2026.Plasmonic metasurface that supports the resonant lattice Kerker effect, manifesting as the suppression of reflection in a narrow spectral range due to the simultaneous excitation of electric dipole and quadrupole modes, also gives rise to a substantial near‐field enhancement.
Sergejs Boroviks +3 more
wiley +1 more source
Unirationality of Fano varieties
Duke Mathematical Journal, 1997 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +3 more sources
The Fano variety of lines of a cuspidal cyclic cubic fourfold
, 2023 We prove that the Fano variety of lines of a cuspidal cyclic cubic fourfold is a symplectic variety with transversal A2-singularities and we study the properties of the nonsymplectic order three automorphism induced by the covering automorphism on the ...
Sarti, Alessandra +2 more
core
K-stability of Thaddeus’ moduli of stable bundle pairs on genus two curves
Forum of Mathematics, SigmaThe moduli space of bundle stable pairs $\overline {M}_C(2,\Lambda )$ on a smooth projective curve C, introduced by Thaddeus, is a smooth Fano variety of Picard rank two.
Junyan Zhao
doaj +1 more source
Geometric classification of 4d N=2 $$ \mathcal{N}=2 $$ SCFTs
Journal of High Energy Physics, 2018 The classification of 4d N=2 $$ \mathcal{N}=2 $$ SCFTs boils down to the classification of conical special geometries with closed Reeb orbits (CSG). Under mild assumptions, one shows that the underlying complex space of a CSG is (birational to) an affine
Matteo Caorsi, Sergio Cecotti
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