Results 61 to 70 of about 14,863,289 (377)
Uncertainty Relation in Quantum Mechanics with Quantum Group Symmetry
, 1993 We study the commutation relations, uncertainty relations and spectra of position and momentum operators within the framework of quantum group % symmetric Heisenberg algebras and their (Bargmann-) Fock representations.
Achim Kempf +4 more
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Journal of Algebra, 1996 On a discrete group \(G\) consider the algebra \(A\) of complex functions with finite supports. Multiplication in \(G\) induces a comultiplication \(\Delta\) for \(A\) by \((\Delta f)(p,q)=f(pq)\), \(f\in A\), \(p\in G\), \(q\in G\). In case \(G\) is infinite, \(\Delta(f)(g \otimes 1)\), \(\Delta(f)(1\otimes g)\in A\otimes A\) for all \(f,g\in A ...
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Numerical simulations of noisy quantum circuits for computational chemistry
Materials Theory, 2022 The opportunities afforded by near-term quantum computers to calculate the ground-state properties of small molecules depend on the structure of the computational ansatz as well as the errors induced by device noise.
Jerimiah Wright +6 more
doaj +1 more source
Quantum Group Gauge Theories and Covariant Quantum Algebras
, 1993 The algebraic formulation of the quantum group gauge models in the framework of the $R$-matrix approach to the theory of quantum groups is given. We consider gauge groups taking values in the quantum groups and noncommutative gauge fields transformed as ...
A.P. Isaev +39 more
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The gamma -Poincare quantum group from quantum group contraction [PDF]
Journal of Physics A: Mathematical and General, 1995 Summary: We propose a contraction of the de Sitter quantum group leading to a Poincaré quantum group in any dimensions. The method relies on the coaction of the de Sitter quantum group on a non-commutative space, and the deformation parameter \(q\) is sent to one.
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Advanced Engineering Materials, EarlyView.This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley +1 more source
Precision atomic gravimeter based on Bragg diffraction
New Journal of Physics, 2013 We present a precision gravimeter based on coherent Bragg diffraction of freely falling cold atoms. Traditionally, atomic gravimeters have used stimulated Raman transitions to separate clouds in momentum space by driving transitions between two internal ...
P A Altin +12 more
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Klein's programme and Quantum Mechanics
, 2015 We review the geometrical formulation of Quantum Mechanics to identify, according to Klein's programme, the corresponding group of transformations. For closed systems, it is the unitary group.
Clemente-Gallardo, J., Marmo, G.
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Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films
Advanced Engineering Materials, EarlyView.Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß +7 more
wiley +1 more source