Results 41 to 50 of about 93,087 (303)

Ghost symmetries [PDF]

open access: yes, 2001
We introduce the notion of a ghost characteristic for nonlocal differential equations. Ghosts are essential for maintaining the validity of the Jacobi identity for the charateristics of nonlocal vector ...
Olver, Peter J.   +5 more
core   +1 more source

Minimal surfaces with non-trivial geometry in the three-dimensional Heisenberg group

open access: yesComplex Manifolds, 2022
We study symmetric minimal surfaces in the three-dimensional Heisenberg group Nil3 using the generalized Weierstrass type representation, the so-called loop group method.
Dorfmeister Josef F.   +2 more
doaj   +1 more source

CPT Symmetry Searches in the Neutral Meson System

open access: yesParticles
A review of the landscape of CPT symmetry tests is presented, centered around the Standard-Model Extension and focusing on tests in the neutral meson system. A discussion of the relevant theories summarizes original ideas.
Ágnes Roberts
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Empirical consequences of symmetries [PDF]

open access: yes, 2011
It is widely recognised that 'global' symmetries, such as the boost invariance of classical mechanics and special relativity, can give rise to direct empirical counterparts such as the Galileo-ship phenomenon.
Wallace, David, Greaves, Hilary
core  

Orbit structure and (reversing) symmetries of toral endomorphisms on rational lattices [PDF]

open access: yes, 2012
Baake M, Neumärker N. Orbit structure and (reversing) symmetries of toral endomorphisms on rational lattices. Discrete and continuous dynamical systems A.
Neumärker, Natascha, Baake, Michael
core   +1 more source

vikraman/popl22-symmetries-artifact: v0.1

open access: yes, 2021
Artifact for Symmetries in Reversible ...
Vikraman Choudhury, Jacek Karwowski
core   +1 more source

Fractional Complex Euler–Lagrange Equation: Nonconservative Systems

open access: yesFractal and Fractional, 2023
Classical forbidden processes paved the way for the description of mechanical systems with the help of complex Hamiltonians. Fractional integrals of complex order appear as a natural generalization of those of real order.
Antonela Toma, Octavian Postavaru
doaj   +1 more source

Symmetry TFT for subsystem symmetry

open access: yesJournal of High Energy Physics
A bstract We generalize the idea of symmetry topological field theory (SymTFT) for subsystem symmetry. We propose the 2-foliated BF theory with level N in (3 + 1)d as subsystem SymTFT for subsystem
Weiguang Cao, Qiang Jia
openaire   +4 more sources

Restricted Weyl symmetry and spontaneous symmetry breakdown of conformal symmetry [PDF]

open access: yesModern Physics Letters A, 2021
In this paper, we elucidate the relation between the restricted Weyl symmetry and spontaneous symmetry breakdown of conformal symmetry. Using a scalar–tensor gravity, we show that the restricted Weyl symmetry leads to spontaneous symmetry breakdown of a global scale symmetry when the vacuum expectation value of a scalar field takes a nonzero value. It
openaire   +3 more sources

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