Results 21 to 30 of about 3,452 (76)

Self‐accelerating topological edge states

open access: yesNanophotonics, Volume 14, Issue 18, Page 3075-3087, September 2025.
Abstract Edge states emerging at the boundaries of materials with nontrivial topology are attractive for many practical applications due to their remarkable robustness to disorder and local boundary deformations, which cannot result in scattering of the energy of the edge states impinging on such defects into the bulk of material, as long as forbidden ...
Zhuo Zhang   +4 more
wiley   +1 more source

Quantum and Braided Lie Algebras

open access: yes, 1993
We introduce the notion of a braided Lie algebra consisting of a finite-dimensional vector space $\CL$ equipped with a bracket $[\ ,\ ]:\CL\tens\CL\to \CL$ and a Yang-Baxter operator $\Psi:\CL\tens\CL\to \CL\tens\CL$ obeying some axioms.
Brzeziński   +22 more
core   +2 more sources

The stratigraphic biography of an archaeological site. Timing depositional events

open access: yesArchaeometry, Volume 67, Issue S1, Page 49-73, June 2025.
Abstract The stratigraphic sequence of an archaeological site constitutes its biography, which details what was deposited, when it was deposited, and how the deposition occurred. However, many current methods of recording archaeological stratigraphy do not allow for a full reconstruction of a site's biography.
Vasiliki Andreaki, Juan Antonio Barceló
wiley   +1 more source

Computation of Time‐Resolved Nonlinear Electronic Spectra From Classical Trajectories

open access: yesWIREs Computational Molecular Science, Volume 15, Issue 3, May/June 2025.
Stimulated emission contribution to the two‐dimensional electronic spectrum of pyrazine at a waiting time of 60 fs as a function of the excitation and emission frequencies. ABSTRACT A variety of time‐resolved spectroscopic techniques employing femtosecond pump and probe pulses are nowadays widely used to unravel the fundamental mechanisms of ...
Maxim F. Gelin   +3 more
wiley   +1 more source

AI Safety for Physical Infrastructures: A Collaborative and Interdisciplinary Approach

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 4, Page 1919-1928, April 2025.
ABSTRACT Where AI systems are increasingly and rapidly impacting engineering, science, and our daily lives, progress in AI safety for physical infrastructures is lagging. Most of the research and educational programs on AI safety do not consider that, in today's connected world, safety and security in physical infrastructures are increasingly entangled.
Fariborz Farahmand, Richard W. Neu
wiley   +1 more source

Quasiconformal Group Approach to Higher Spin Algebras, their Deformations and Supersymmetric Extensions

open access: yes, 2016
The quasiconformal method provides us with a unified approach to the construction of minimal unitary representations (minrep) of noncompact groups, their deformations as well as their supersymmetric extensions.
Gunaydin, Murat
core   +1 more source

Relative and absolute Lefschetz standard conjectures for some Lagrangian fibrations

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 4, April 2025.
Abstract We show that the hyper‐Kähler varieties of OG10‐type constructed by Laza–Saccà–Voisin (LSV) verify the Lefschetz standard conjecture. This is an application of a more general result, stating that certain Lagrangian fibrations verify this conjecture. The main technical assumption of this general result is that the Lagrangian fibration satisfies
Giuseppe Ancona   +3 more
wiley   +1 more source

Weakly coupled N=4 Super Yang-Mills and N=6 Chern-Simons theories from u(2|2) Yangian symmetry

open access: yes, 2008
In this paper we derive the universal R-matrix for the Yangian Y(u(2|2)), which is an abstract algebraic object leading to rational solutions of the Yang-Baxter equation on representations.
A. Agarwal   +37 more
core   +1 more source

Maximal dimensional subalgebras of general Cartan‐type Lie algebras

open access: yesBulletin of the London Mathematical Society, Volume 57, Issue 2, Page 605-624, February 2025.
Abstract Let k$\mathbb {k}$ be a field of characteristic zero and let Wn=Der(k[x1,…,xn])$\mathbb {W}_n = \operatorname{Der}(\mathbb {k}[x_1,\ldots,x_n])$ be the nth$n{\text{th}}$ general Cartan‐type Lie algebra. In this paper, we study Lie subalgebras L$L$ of Wn$\mathbb {W}_n$ of maximal Gelfand–Kirillov (GK) dimension, that is, with GKdim(L)=n ...
Jason Bell, Lucas Buzaglo
wiley   +1 more source

Ternary algebras and groups

open access: yes, 2007
We construct explicitly groups associated to specific ternary algebras which extend the Lie (super)algebras (called Lie algebras of order three). It turns out that the natural variables which appear in this construction are variables which generate the ...
Ahmedov H   +10 more
core   +1 more source

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