Results 81 to 90 of about 60,391 (204)

A geometric Hamiltonian description of composite quantum systems and quantum entanglement

, 2014
Finite-dimensional Quantum Mechanics can be geometrically formulated as a proper classical-like Hamiltonian theory in a projective Hilbert space. The description of composite quantum systems within the geometric Hamiltonian framework is discussed in this
Pastorello, Davide
core   +1 more source

Analysis of density matrix embedding theory around the non‐interacting limit

Communications on Pure and Applied Mathematics, Volume 78, Issue 8, Page 1359-1410, August 2025.
Abstract This article provides the first mathematical analysis of the Density Matrix Embedding Theory (DMET) method. We prove that, under certain assumptions, (i) the exact ground‐state density matrix is a fixed‐point of the DMET map for non‐interacting systems, (ii) there exists a unique physical solution in the weakly‐interacting regime, and (iii ...
Eric Cancès, Fabian M. Faulstich, Alfred Kirsch, Eloïse Letournel, Antoine Levitt   +4 more
wiley   +1 more source

Spatially Periodic Solutions for Evolution Anisotropic Variable‐Coefficient Navier–Stokes Equations: II. Serrin‐Type Solutions

Mathematical Methods in the Applied Sciences, Volume 48, Issue 12, Page 11592-11619, August 2025.
ABSTRACT We consider evolution (nonstationary) space‐periodic solutions to the n$$ n $$‐dimensional nonlinear Navier–Stokes equations of anisotropic fluids with the viscosity coefficient tensor variable in space and time and satisfying the relaxed ellipticity condition.
Sergey E. Mikhailov
wiley   +1 more source

Jointly A-hyponormal m-tuple of commuting operators and related results

AIMS Mathematics
In this paper, we aim to investigate the class of jointly hyponormal operators related to a positive operator $ A $ on a complex Hilbert space $ \mathcal{X} $, which is called jointly $ A $-hyponormal. This notion was first introduced by Guesba et al. in
Salma Aljawi, Kais Feki, Hranislav Stanković   +2 more
doaj   +1 more source

Smoothed Moreau‐Yosida Tensor‐Train Approximation of State‐Constrained Optimization Problems Under Uncertainty

Numerical Linear Algebra with Applications, Volume 32, Issue 4, August 2025.
ABSTRACT We propose an algorithm to solve optimization problems constrained by ordinary or partial differential equations under uncertainty, with additional almost sure inequality constraints on the state variable. To alleviate the computational burden of high‐dimensional random variables, we approximate all random fields by the tensor‐train (TT ...
Harbir Antil, Sergey Dolgov, Akwum Onwunta   +2 more
wiley   +1 more source

Generalization of Gisin’s theorem to quantum fields

New Journal of Physics
We generalize Gisin’s theorem on the relation between the entanglement of pure states and Bell non-classicality to the case of mode entanglement of separated groups of modes of quantum fields extending the theorem to cover also states with undefined ...
Konrad Schlichtholz, Marcin Markiewicz
doaj   +1 more source

Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect

Advanced Physics Research, Volume 4, Issue 7, July 2025.
This review investigates the connection between chiral anomalies and their manifestation in topological materials, using both perturbative methods based on ordinary quantum field theory and conformal field theory (CFT). It emphasizes the role of CFT in momentum space for parity‐odd correlation functions, and their reconstruction by the inclusion of a ...
Claudio Corianò, Mario Cretì, Stefano Lionetti, Dario Melle, Riccardo Tommasi   +4 more
wiley   +1 more source

Advances in Isotope Labeling for Solution Nucleic Acid Nuclear Magnetic Resonance Spectroscopy

ChemPlusChem, Volume 90, Issue 7, July 2025.
Recent advances in the field of nucleic acid nuclear magnetic resonance (NMR) are presented. Stable isotope labeling protocols and new approaches to segmentally label nucleic acid with NMR‐active residues are summarized. The novel methods will have a strong impact on the future of nucleic acid NMR and the characterization of structure and dynamics of ...
Stefan Hilber, Solomon Kojo Attionu, Theodore Kwaku Dayie, Christoph Kreutz   +3 more
wiley   +1 more source

Strike‐Slip Versus Extensional Tectonics at the Oceanographer Transform Fault, Mid‐Atlantic Ridge at 35°N

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Oceanic transform faults and their fracture zones are among the most striking features of ocean basins. Plate tectonics describes them as strike‐slip zones connecting mid‐ocean ridge segments. Still, no generally accepted theory exists for the lateral strain partitioning resulting in the deep and wide transform valleys and extensively ...
Ingo Grevemeyer, Dietrich Lange, Ingo Klaucke, Lars H. Ruepke, Anouk Beniest, Laura Gómez de la Peña, Yu Ren, Christian Filbrandt, Helene‐Sophie Hilbert, Yuhan Li, Louisa Murray‐Bergquist, Katharina Unger Moreno, Thor Hansteen, Colin W. Devey   +13 more
wiley   +1 more source

Derivation and Numerical Assessment of a Stochastic Large–Scale Hydrostatic Primitive Equations Model

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 7, July 2025.
Abstract Planetary flows are shaped by interactions at scales much smaller than the flows themselves, with mesoscale and sub–mesoscale eddies playing key roles in mixing, particle transport and tracer dispersion. To capture these effects, we introduce a stochastic formulation of the primitive equations within the Location Uncertainty (LU) framework ...
Francesco L. Tucciarone, Long Li, Etienne Mémin, Pranav Chandramouli   +3 more
wiley   +1 more source