Results 61 to 70 of about 511,872 (337)

Currents, charges and algebras in exceptional generalised geometry

open access: yesJournal of High Energy Physics, 2021
A classical E d(d)-invariant Hamiltonian formulation of world-volume theories of half-BPS p-branes in type IIb and eleven-dimensional supergravity is proposed, extending known results to d ≤ 6. It consists of a Hamiltonian, characterised by a generalised
David Osten
doaj   +1 more source

The integrability of Lie-invariant geometric objects generated by ideals in the Grassmann algebra

open access: yes, 1997
We investigate closed ideals in the Grassmann algebra serving as bases of Lie-invariant geometric objects studied before by E. Cartan. Especially, the E.
Ambrose N.   +11 more
core   +1 more source

Geometric Aspects of the Isentropic Liquid Dynamics and Vorticity Invariants

open access: yesEntropy, 2020
We review a modern differential geometric description of fluid isentropic motion and features of it including diffeomorphism group structure, modelling the related dynamics, as well as its compatibility with the quasi-stationary thermodynamical ...
Alexander A. Balinsky   +3 more
doaj   +1 more source

Extremal metrics and K-stability

open access: yes, 2006
We propose an algebraic geometric stability criterion for a polarised variety to admit an extremal Kaehler metric. This generalises conjectures by Yau, Tian and Donaldson which relate to the case of Kaehler-Einstein and constant scalar curvature metrics.
Székelyhidi, Gábor
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Cubic surfaces and their invariants: Some memories of Raymond Stora

open access: yesNuclear Physics B, 2016
Cubic surfaces embedded in complex projective 3-space are a classical illustration of the use of old and new methods in algebraic geometry. Recently, they made their appearance in physics, and in particular aroused the interest of Raymond Stora, to the ...
Michel Bauer
doaj   +1 more source

Digital Quantum Simulation of Nonadiabatic Geometric Gates via Shortcuts to Adiabaticity

open access: yesEntropy, 2020
Geometric phases are used to construct quantum gates since it naturally resists local noises, acting as the modularized units of geometric quantum computing.
Yapeng Wang   +3 more
doaj   +1 more source

Matroids and Geometric Invariant Theory of torus actions on flag spaces [PDF]

open access: yes, 2005
Let F / / T be a Geometric Invariant Theory quotient of a partial flag variety F = SL ( n , C ) / P by the action t ⋅ g P = t g P of the maximal torus T in SL ( n , C ) , where P is a parabolic subgroup containing T.
Benjamin Howard
semanticscholar   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Conditions for Equivalent Noise Sensitivity of Geometric and Dynamical Quantum Gates

open access: yesPRX Quantum, 2022
Geometric quantum gates are often expected to be more resilient than dynamical gates against certain types of error, which would make them ideal for robust quantum computing.
R. K. L. Colmenar   +2 more
doaj   +1 more source

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