Results 71 to 80 of about 12,863,172 (309)

Electrical Step‐Edge Contact to a Topological Superconductor Candidate 2M‐WS2

open access: yesAdvanced Science, Volume 13, Issue 2, 9 January 2026.
This work develops a step‐edge contact technique for encapsulated 2M‐WS2, effectively protecting the material from contamination and achieving ultralow contact resistance ( 65 µm). Highly transparent interfaces, as evidenced by Andreev reflection, enable the observation of intrinsic superconducting properties.
Qikang Gan   +19 more
wiley   +1 more source

On the Positive Definite Lattice with Determinant 5

open access: yesAxioms
This paper is devoted to providing a classification of positive definite lattices with determinant 5 and a rank less than or equal to 6.
Libo Zhao   +3 more
doaj   +1 more source

On the Finite Groups that all Their Semi-Cayley Graphs are Quasi-Abelian [PDF]

open access: yesMathematics Interdisciplinary Research, 2018
In this paper, we prove that every semi-Cayley graph over a group G is quasi-abelian if and only if G is abelian.
Majid Arezoomand
doaj   +1 more source

Connections on non-abelian Gerbes and their Holonomy [PDF]

open access: yes, 2013
We introduce an axiomatic framework for the parallel transport of connections on gerbes. It incorporates parallel transport along curves and along surfaces, and is formulated in terms of gluing axioms and smoothness conditions.
Schreiber, Urs, Waldorf, Konrad
core   +1 more source

Hereditary Coreflective Subcategories in Certain Categories of Abelian Semitopological Groups

open access: yesAxioms, 2019
Let A be an epireflective subcategory of the category of all semitopological groups that consists only of abelian groups. We describe maximal hereditary coreflective subcategories of A that are not bicoreflective in A in the case that ...
Veronika Pitrová
doaj   +1 more source

Normalizers and centralizers of subgroups in non-Abelian groups of small order [PDF]

open access: yesКомпьютерные исследования и моделирование, 2012
By applying the computer program, which is created by authors, we obtain the exact representation of normalizers and centralizers of all nontrivial subgroups in non-Abelian groups G under the condition |G|20.
Ilya Anatolievih Shilin   +1 more
doaj   +1 more source

Quantum GraviElectro Dynamics

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley   +1 more source

Distance Powers and Distance Matrices of Integral Cayley Graphs over Abelian Groups [PDF]

open access: yes, 2012
It is shown that distance powers of an integral Cayley graph over an abelian group are again integral Cayley graphs over that group. Moreover, it is proved that distance matrices of integral Cayley graphs over abelian groups have integral ...
Klotz, W., Sander, T.
core  

Randomized Hypergraph States and Their Entanglement Properties

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
Randomized hypergraph (RH) states are mixed states that extend the concept of randomized graph states to multi‐qubit hypergraphs subject to probabilistic gate imperfections. By modeling noisy multi‐qubit operations, this work reveals nonmonotonic behavior in bipartite and multipartite entanglement, derives analytical witnesses for specific hypergraph ...
Vinícius Salem   +2 more
wiley   +1 more source

A unified half-integral Erdős-Pósa theorem for cycles in graphs labelled by multiple abelian groups [PDF]

open access: green, 2021
J. Pascal Gollin   +4 more
openalex   +1 more source

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