Results 41 to 50 of about 956,253 (229)
Quantum spectral dimension in quantum field theory [PDF]
, 2016 We reinterpret the spectral dimension of spacetimes as the scaling of an effective self-energy transition amplitude in quantum field theory (QFT), when the system is probed at a given resolution.
Calcagni, Gianluca +2 more
core +2 more sources
Axioms, 2016 We study densely defined unbounded operators acting between different Hilbert spaces. For these, we introduce a notion of symmetric (closable) pairs of operators.
Palle Jorgensen, Feng Tian
doaj +1 more source
Spectral and scattering theory of one-dimensional coupled photonic crystals [PDF]
, 2019 We study the spectral and scattering theory of light transmission in a system consisting of two asymptotically periodic waveguides, also known as one-dimensional photonic crystals, coupled by a junction.
de Aldecoa, Rafael Tiedra +3 more
core +2 more sources
An Abstract Linking Theorem Applied to Indefinite Problems Via Spectral Properties
Advanced Nonlinear Studies, 2019 An abstract linking result for Cerami sequences is proved without the Cerami condition. It is applied directly in order to prove the existence of critical points for a class of indefinite problems in infinite-dimensional Hilbert Spaces.
Maia Liliane A., Soares Mayra
doaj +1 more source
Geary’s c and Spectral Graph Theory
Mathematics, 2021 Spatial autocorrelation, of which Geary’s c has traditionally been a popular measure, is fundamental to spatial science. This paper provides a new perspective on Geary’s c.
Hiroshi Yamada
doaj +1 more source
Spectral theory of Fourier-Stieltjes algebras
, 2018 In this paper we start studying spectral properties of the Fourier-Stieltjes algebras, largely following Zafran's work on the algebra of measures on a locally compact group.
Ohrysko, Przemysław +1 more
core +1 more source
Calculating the Price for Derivative Financial Assets of Bessel Processes Using the Sturm-Liouville Theory [PDF]
Problemi Ekonomiki, 2017 In the paper we apply the spectral theory to find the price for derivatives of financial assets assuming that the processes described are Markov processes and such that can be considered in the Hilbert space L^2 using the Sturm-Liouville theory.
Burtnyak Ivan V., Malytska Hanna P.
doaj
Spectral Radii of Bounded Operators on Topological Vector Spaces [PDF]
, 2000 In this paper we develop a version of spectral theory for bounded linear operators on topological vector spaces. We show that the Gelfand formula for spectral radius and Neumann series can still be naturally interpreted for operators on topological ...
Troitsky, Vladimir G.
core
New Journal of Physics, 2018 Relaxation and first passage processes are the pillars of kinetics in condensed matter, polymeric and single-molecule systems. Yet, an explicit connection between relaxation and first passage time-scales so far remained elusive.
David Hartich, Aljaž Godec
doaj +1 more source
Spectral Mixing Theory-Based Double-Branch Network for Spectral Super-Resolution
Remote Sensing, 2023 Due to the limitations of imaging systems, the swath width of available hyperspectral images (HSIs) is relatively narrow, making it difficult to meet the demands of various applications.
Lingyu Sha +4 more
doaj +1 more source