Results 1 to 10 of about 702,210 (123)

Secant non-defectivity via collisions of fat points [PDF]

Advances in Mathematics, 409(B), 108657, 2022, 2021
Secant defectivity of projective varieties is classically approached via dimensions of linear systems with multiple base points in general position. The latter can be studied via degenerations. We exploit a technique that allows some of the base points to collapse together.
arxiv   +1 more source

Hybridization-switching induced Mott transition in ABO$_3$ perovskites [PDF]

Phys. Rev. Lett. 122, 016404 (2019), 2018
We propose the concept of "hybridization-switching induced Mott transition" which is relevant to a broad class of ABO$_3$ perovskite materials including BiNiO$_3$ and PbCrO$_3$ which feature extended $6s$ orbitals on the A-site cation (Bi or Pb), and A-O covalency induced ligand holes.
arxiv   +1 more source

Stabilization of A-site ordered perovskites and formation of spin-half antiferromagnetic lattice: CaCu$_3$Ti$_4$O$_{12}$ and CaCu$_3$Zr$_4$O$_{12}$ [PDF]

, 2022
A-site ordered perovskites, CaCu$_3$B$_4$O$_{12}$, which are derivatives of conventional ABO$_3$ perovskites, exhibit varying electronic and magnetic properties. With the objective of examining the role of Cu in this work, we have studied CaCu$_3$Ti$_4$O$_{12}$ and CaCu$_3$Zr$_4$O$_{12}$ and presented the cause of the crystallization of A-site ordered ...
arxiv   +1 more source

Join Size Bounds using Lp-Norms on Degree Sequences [PDF]

arXiv, 2023
Estimating the output size of a query is a fundamental yet longstanding problem in database query processing. Traditional cardinality estimators used by database systems can routinely underestimate the true output size by orders of magnitude, which leads to significant system performance penalty. Recently, upper bounds have been proposed that are based
arxiv  

Pure Dephasing of Light-Matter Systems in the Ultrastrong and Deep-Strong Coupling Regimes [PDF]

, 2022
Pure dephasing originates from the non-dissipative information exchange between quantum systems and environments, and plays a key-role in both spectroscopy and quantum information technology. Often pure dephasing constitutes the main mechanism of decay of quantum correlations.
arxiv   +1 more source

Convergence of Datalog over (Pre-) Semirings [PDF]

arXiv, 2021
Recursive queries have been traditionally studied in the framework of datalog, a language that restricts recursion to monotone queries over sets, which is guaranteed to converge in polynomial time in the size of the input. But modern big data systems require recursive computations beyond the Boolean space.
arxiv  

Effect of Auditory Stimuli on Electroencephalography-based Authentication [PDF]

arXiv, 2022
Opposed to standard authentication methods based on credentials, biometric-based authentication has lately emerged as a viable paradigm for attaining rapid and secure authentication of users. Among the numerous categories of biometric traits, electroencephalogram (EEG)-based biometrics is recognized as a promising method owing to its unique ...
arxiv  

On the microscopic mechanisms behind hyperferroelectricity [PDF]

Phys. Rev. B 103, 014116 (2021), 2020
Hyperferroelectrics are receiving a growing interest thanks to their unique property to retain a spontaneous polarization even in presence of a depolarizing field. Nevertheless, general microscopic mechanisms driving hyperferroelectricity, which is ascribed to the softening of a polar $LO$ mode, are still missing. Here, by means of phonons calculations
arxiv   +1 more source

ABO: Abandon Bayer Filter for Adaptive Edge Offloading in Responsive Augmented Reality [PDF]

The ACM Web Conference 2025
Bayer-patterned color filter array (CFA) has been the go-to solution for color image sensors. In augmented reality (AR), although color interpolation (i.e., demosaicing) of pre-demosaic RAW images facilitates a user-friendly rendering, it creates no benefits in offloaded DNN analytics but increases the image channels by 3 times inducing higher ...
arxiv   +1 more source

Turning ABO$_3$ antiferroelectrics into ferroelectrics: Design rules for practical rotation-driven ferroelectricity in double perovskites and A$_3$B$_2$O$_7$ Ruddlesden-Popper compounds [PDF]

Advanced Functional Materials, 23, 4810-4820 (2013), 2012
Ferroic transition metal oxides, which exhibit spontaneous elastic, electrical, magnetic or toroidal order, exhibit functional properties that find use in ultrastable solid-state memories to sensors and medical imaging technologies. To realize multifunctional behavior, where one order parameter can be coupled to the conjugate field of another order ...
arxiv   +1 more source