Results 21 to 30 of about 1,585 (249)

Infinite distance networks in field space and charge orbits

Journal of High Energy Physics, 2019
The Swampland Distance Conjecture proposes that approaching infinite distances in field space an infinite tower of states becomes exponentially light. We study this conjecture for the complex structure moduli space of Calabi-Yau manifolds.
Thomas W. Grimm, Chongchuo Li, Eran Palti   +2 more
doaj   +1 more source

Hydrodynamic dispersion relations at finite coupling

Journal of High Energy Physics, 2021
By using holographic methods, the radii of convergence of the hydrodynamic shear and sound dispersion relations were previously computed in the N $$ \mathcal{N} $$ = 4 supersymmetric Yang-Mills theory at infinite ’t Hooft coupling and infinite number of ...
Sašo Grozdanov, Andrei O. Starinets, Petar Tadić   +2 more
doaj   +1 more source

Formation of Majorana fermions in finite-size graphene strips

SciPost Physics, 2017
We investigate the formation of Majorana fermions in finite-size graphene strips with open boundary conditions in both directions, in the presence of an in-plane magnetic field and in the proximity of a superconducting substrate. We show that for long
Vardan Kaladzhyan, Cristina Bena
doaj   +1 more source

Approximation to Hadamard Derivative via the Finite Part Integral

Entropy, 2018
In 1923, Hadamard encountered a class of integrals with strong singularities when using a particular Green’s function to solve the cylindrical wave equation. He ignored the infinite parts of such integrals after integrating by parts.
Chuntao Yin, Changpin Li, Qinsheng Bi
doaj   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Classification of Real Solutions of the Fourth Painlevé Equation

Mathematics
Painlevé transcendents are usually considered as complex functions of a complex variable, but, in applications, it is often the real cases that are of interest.
Jeremy Schiff, Michael Twiton
doaj   +1 more source

First integrals and phase portraits of planar polynomial differential cubic systems with invariant straight lines of total multiplicity eight

Electronic Journal of Qualitative Theory of Differential Equations, 2017
In the article [C. Bujac, J. Llibre, N. Vulpe, Qual. Theory Dyn. Syst. 15(2016), 327–348] for the family of cubic differential systems with the maximum number of invariant straight lines, i.e.
Cristina Bujac, Nicolae Vulpe
doaj   +1 more source

Local invertibility and sensitivity of atomic structure-feature mappings [version 1; peer review: 2 approved]

Open Research Europe, 2021
Background: The increasingly common applications of machine-learning schemes to atomic-scale simulations have triggered efforts to better understand the mathematical properties of the mapping between the Cartesian coordinates of the atoms and the variety
Sergey N. Pozdnyakov, Liwei Zhang, Christoph Ortner, Gábor Csányi, Michele Ceriotti   +4 more
doaj   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source

Landau-Ginzburg skeletons

Journal of High Energy Physics, 2017
We study the class of indecomposable two-dimensional Landau-Ginzburg theories with (2,2) supersymmetry and central charge c < 6 with the aim of classifying all such theories up to marginal deformations.
Ian C. Davenport, Ilarion V. Melnikov
doaj   +1 more source