Results 61 to 70 of about 62,388 (221)
Modeling Sampling in Tensor Products of Unitary Invariant Subspaces
Journal of Function Spaces, 2016 The use of unitary invariant subspaces of a Hilbert space H is nowadays a recognized fact in the treatment of sampling problems. Indeed, shift-invariant subspaces of L2(R) and also periodic extensions of finite signals are remarkable examples where this ...
Antonio G. García +2 more
doaj +1 more source
, 2017 We study QPT (quasi-polynomial tractability) in the worst case setting for linear tensor product problems defined over Hilbert spaces. We assume that the domain space is a reproducing kernel Hilbert space so that function values are well defined.
A Hinrichs +8 more
core +1 more source
Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons
Communications on Pure and Applied Mathematics, EarlyView.Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley +1 more source
Multi Matrix Vector Coherent States
, 2004 A class of vector coherent states is derived with multiple of matrices as vectors in a Hilbert space, where the Hilbert space is taken to be the tensor product of several other Hilbert spaces.
A. Krzyżak +20 more
core +2 more sources
Laser &Photonics Reviews, EarlyView.This work bridges classical and quantum polarimetry toward quantitative quantum photonic sensing of turbid environments. Theoretical and experimental investigations reveal how polarization‐entangled photonic states evolve in turbid media, uncovering robust trends in entanglement evolution and paving the way for advanced quantum sensing in biomedical ...
Vira R. Besaga +5 more
wiley +1 more source
The quantum Hilbert space of a chiral two-form in d = 5 + 1 dimensions
, 2001 We consider the quantum theory of a two-form gauge field on a space-time which is a direct product of time and a spatial manifold, taken to be a compact five-manifold with no torsion in its cohomology.
E. Witten +6 more
core +1 more source
Replica Wormholes and Quantum Hair
Fortschritte der Physik, EarlyView.Abstract The recent applications of Euclidean path integrals to the black hole information problem are discussed. In calculations with replica wormholes as the next‐to‐leading order correction to the Gibbons–Hawking saddlepoint, the radiation density matrix approaches a pure state at late times, following the Page curve.
Xavier Calmet, Stephen D. H. Hsu
wiley +1 more source
Iraqi Journal for Computer Science and MathematicsT Through the article, we will provide an entirely novel type of quasi operators base on the concept of D razin inverse in Operator theory which is named (n,D) -quasi operators on the Hilbert spaces, also we explain the sum, product, and other features ...
salim dawood mohsen
doaj +1 more source
A Proper Generalized Decomposition for the solution of elliptic problems in abstract form by using a functional Eckart-Young approach [PDF]
, 2011 International audienceThe Proper Generalized Decomposition (PGD) is a methodology initially proposed for the solution of partial dierential equations (PDE) dened in tensor product spaces.
Falco, Antonio, Nouy, Anthony
core +1 more source
Symmetries of finite Heisenberg groups for multipartite systems
, 2012 A composite quantum system comprising a finite number k of subsystems which are described with position and momentum variables in Z_{n_{i}}, i=1,...,k, is considered.
Korbelar, M., Tolar, J.
core +1 more source