Results 1 to 10 of about 27,367 (272)

Commutator Matrix in Phase Space Mapping Models for Nonadiabatic Quantum Dynamics [PDF]

open access: greenJournal of Physical Chemistry A, 2021
We show that a novel, general phase space mapping Hamiltonian for nonadiabatic systems, which is reminiscent of the renowned Meyer-Miller mapping Hamiltonian, involves a commutator variable matrix rather than the conventional zero-point-energy parameter.
Xin He, Baihua Wu, Zhihao Gong, Jian Liu
openalex   +3 more sources

Analytical expressions for the time evolution of spin systems affected by two or more interactions [PDF]

open access: yesMagnetic Resonance
Analytical expressions for the description of the time evolution of spin systems beyond product–operator formalism (POF) can be obtained if a low-dimensional subspace of the Liouville space has been found in which the time evolution of the spin system ...
G. Hempel
doaj   +2 more sources

Compactness of Commutators for Riesz Potential on Local Morrey-type spaces [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
The paper considers Morrey-type local spaces from LM^w_pθ. The main work is the proof of the commutator compactness theorem for the Riesz potential [b, I_α] in local Morrey-type spaces from LM^w1_pθ to LM^w2_qθ.
D.T. Matin   +2 more
doaj   +3 more sources

Modular commutator in gapped quantum many-body systems [PDF]

open access: yesPhysical review B, 2021
In we argued that the chiral central charge — a topologically protected quantity characterizing the edge theory of a gapped (2+1)-dimensional system — can be extracted from the bulk by using an order parameter called the modular commutator. In this paper,
Isaac H. Kim   +3 more
semanticscholar   +1 more source

Coupled cluster downfolding methods: The effect of double commutator terms on the accuracy of ground-state energies. [PDF]

open access: yesJournal of Chemical Physics, 2021
Downfolding coupled cluster techniques have recently been introduced into quantum chemistry as a tool for the dimensionality reduction of the many-body quantum problem.
Nicholas P. Bauman, K. Kowalski
semanticscholar   +1 more source

Stable commutator length on big mapping class groups [PDF]

open access: yesBulletin of the London Mathematical Society, 2021
We study stable commutator length on mapping class groups of certain infinite‐type surfaces. In particular, we show that stable commutator length defines a continuous function on the commutator subgroups of such infinite‐type mapping class groups.
Elizabeth B Field   +2 more
semanticscholar   +1 more source

Increasing the Efficiency of Diagnostics in the Brush-Commutator Assembly of a Direct Current Electric Motor

open access: yesEnergies, 2023
Increasing the productivity and reliability of mining infrastructure facilities is an important task in achieving future goals. Mining dump trucks are an important part of coal mine infrastructure. In this article, to determine the reliability indicators
Olga A. Filina   +7 more
semanticscholar   +1 more source

BOUNDEDNESS AND COMPACTNESS OF CAUCHY-TYPE INTEGRAL COMMUTATOR ON WEIGHTED MORREY SPACES [PDF]

open access: yesJournal of the Australian Mathematical Society, 2020
In this paper we study boundedness and compactness characterizations of the commutators of Cauchy type integrals on bounded strongly pseudoconvex domains D in $\mathbb C^{n}$ with boundaries $bD$ satisfying the minimum regularity condition $C^{2}$ ,
Ruming Gong   +3 more
semanticscholar   +1 more source

Theory of Trotter Error with Commutator Scaling

open access: yes, 2021
Product formulas offer a powerful, simple approach to quantum simulation. A new theory quantifying their errors puts these algorithms on a rigorous foundation, showcasing their superiority over other methods.
Andrew M. Childs   +4 more
semanticscholar   +1 more source

Maximal commutator and commutator of maximal function on total Morrey spaces

open access: yesJournal of Mathematical Inequalities, 2022
. In this paper we introduce a new variant of Morrey spaces called total Morrey spaces L p , λ , μ ( R n ) . These spaces generalize the classical Morrey spaces so that L p , λ , λ ( R n ) ≡ L p , λ ( R n ) and the modi fi ed Morrey spaces so that L p , λ
V. Guliyev
semanticscholar   +1 more source

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