Results 61 to 70 of about 244,255 (319)

Precision atomic gravimeter based on Bragg diffraction

open access: yesNew 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
doaj   +1 more source

Numerical simulations of noisy quantum circuits for computational chemistry

open access: yesMaterials 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

A left quantum group

open access: yesJournal of Algebra, 2005
A left Hopf algebra is a bialgebra \(H\) with a left antipode \(S\), i.e. a linear map \(S\colon H\to H\) such that \(S*I=\mu\varepsilon\), where \(\varepsilon\) is the counit, \(\mu\) is the unit, \(I\) is the identity map, and \(*\) is the convolution product. A left Hopf algebra which is not a Hopf algebra was constructed by \textit{J. A.
Rodríguez-Romo, Suemi, Taft, Earl J.
openaire   +2 more sources

QUANTUM ISOMETRY GROUPS OF SYMMETRIC GROUPS [PDF]

open access: yesInternational Journal of Mathematics, 2012
We identify the quantum isometry groups of spectral triples built on the symmetric groups with length functions arising from the nearest-neighbor transpositions as generators. It turns out that they are isomorphic to certain "doubling" of the group algebras of the respective symmetric groups.
Liszka-Dalecki, Jan, Sołtan, Piotr M.
openaire   +2 more sources

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

open access: yesFEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong   +3 more
wiley   +1 more source

Quantum stochastic convolution cocycles II [PDF]

open access: yes, 2008
Schurmann's theory of quantum Levy processes, and more generally the theory of quantum stochastic convolution cocycles, is extended to the topological context of compact quantum groups and operator space coalgebras.
Skalski, Adam G., Lindsay, J. Martin
core  

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

open access: yesFEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard   +12 more
wiley   +1 more source

Quantum Groups as Hidden Symmetries of Quantum Impurities [PDF]

open access: yesPhysical Review Letters, 2018
5 pages, 2 ...
Yakaboylu, Enderalp   +2 more
openaire   +3 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced 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

Epistemic and Ontic Quantum Realities [PDF]

open access: yes, 2002
Quantum theory has provoked intense discussions about its interpretation since its pioneer days. One of the few scientists who have been continuously engaged in this development from both physical and philosophical perspectives is Carl Friedrich von ...
Atmanspacher, Harald   +3 more
core   +1 more source

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