Results 91 to 100 of about 3,784,223 (275)
Chevalley formulae for the motivic Chern classes of Schubert cells and for the stable envelopes [PDF]
, 2023 Leonardo C. Mihalcea +2 more
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Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation
Laser &Photonics Reviews, EarlyView.Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley +1 more source
Classification of polarized deformation quantizations
, 2002 We give a classification of polarized deformation quantizations on a symplectic manifold with a (complex) polarization. Also, we establish a formula which relates the characteristic class of a polarized deformation quantization to its Fedosov class and ...
Donin, J.
core +1 more source
The Chern-Mather class of the multiview variety [PDF]
, 2017 The multiview varietyassociated to a collection of N cameras records which sequences of image points in ℙ2N can be obtained by taking pictures of a given world point x∈ℙ3 with the cameras.
Corey Harris, Daniel Lowengrub
semanticscholar +1 more source
Chern Classes in Alexander–Spanier Cohomology [PDF]
K-Theory, 1998 In this article we construct explicit cocycles in the Alexander-Spanier cohomological complex, representing the Chern character of an element in K-theory.
openaire +3 more sources
Vector bundles on bielliptic surfaces: Ulrich bundles and degree of irrationality
Mathematische Nachrichten, EarlyView.Abstract This paper deals with two problems about vector bundles on bielliptic surfaces. The first is to give a classification of Ulrich bundles on such surfaces S$S$, which depends on the topological type of S$S$. In doing so, we study the weak Brill–Noether property for moduli spaces of sheaves with isotropic Mukai vector. Adapting an idea of Moretti
Edoardo Mason
wiley +1 more source
The DNA of Calabi–Yau Hypersurfaces
Fortschritte der Physik, EarlyView.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 +2 more
wiley +1 more source
On the Pulsating Strings in AdS4×ℂℙ3
Advances in High Energy Physics, 2009 We study the class of pulsating strings on AdS4×ℂℙ3. Using a generalized ansatz for pulsating string configurations we find new solutions of this class. Further we quasiclassically quantize the theory and obtain the first corrections to the energy.
H. Dimov, R. C. Rashkov
doaj +1 more source
Ghosts in higher derivative Maxwell-Chern-Simon's theory and PT-symmetry
Physics Letters B, 2020 Ghost fields in quantum field theory have been a long standing problem. Specifically, theories with higher derivatives involve ghosts that appear in the Hamiltonian in the form of linear momenta term, which is commonly known as the Ostrogradski ghost ...
Biswajit Paul +2 more
doaj +1 more source
The Dijkgraaf-Witten invariants from second Chern classes [PDF]
, 2023 Takefumi Nosaka
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