Results 71 to 80 of about 8,338 (159)

Bonding Heterogeneity and Nanoprecipitation on Substituting the Anionic Framework in Mg3Sb2 for p‐Type Zintl Thermoelectrics

Small Structures, Volume 6, Issue 4, April 2025.
Alloying‐induced bonding heterogeneity in p‐type Mg3(Sb1−2xBixSnx)2 leads to local atomic ordering, site preferences, and heterogeneous interfaces, influencing structural transitions and thermoelectric properties. A partial trigonal‐to‐monoclinic phase transition occurs, with a cubic Mg2Sn nanophase emerging at higher alloying content.
Nagendra Singh Chauhan, Takao Mori
wiley   +1 more source

Loop quantization of spherically symmetric midi‐superspaces : the interior problem [PDF]

, 2007
We continue the study of spherically symmetric vacuum space‐times in loop quantum gravity by treating the interior of a black hole. We start from a midi‐superspace approach, but a simple gauge fixing leads to a Kantowski–Sachs form for the variables.
Miguel Campiglia, R. Gambini, J. Pullin
semanticscholar   +1 more source

Six-dimensional N $$ \mathcal{N} $$ = (2, 0) conformal superspace

Journal of High Energy Physics
We develop a new off-shell formulation for six-dimensional conformal supergravity obtained by gauging the 6D N $$ \mathcal{N} $$ = (2, 0) superconformal algebra in superspace.
Christian Kennedy, Gabriele Tartaglino-Mazzucchelli   +1 more
doaj   +1 more source

The linear $\protect \mathfrak{n}(1|N)$–invariant differential operators and $\protect \mathfrak{n}(1|N)$–relative cohomology

Comptes Rendus. Mathématique, 2020
Over the $(1,N)$-dimensional supercircle $S^{1|N}$, we classify $\mathfrak{n}(1|N)$-invariant linear differential operators acting on the superspaces of weighted densities on $S^{1|N}$, where $\mathfrak{n}(1|N)$ is the Heisenberg Lie superalgebra.
Khalfoun, Hafedh, Laraiedh, Ismail
doaj   +1 more source

Double Copy From Tensor Products of Metric BV■‐Algebras

Fortschritte der Physik, Volume 73, Issue 1-2, February 2025.
Abstract Field theories with kinematic Lie algebras, such as field theories featuring color–kinematics duality, possess an underlying algebraic structure known as BV■‐algebra. If, additionally, matter fields are present, this structure is supplemented by a module for the BV■‐algebra.
Leron Borsten, Branislav Jurčo, Hyungrok Kim, Tommaso Macrelli, Christian Saemann, Martin Wolf   +5 more
wiley   +1 more source

Loop quantization of spherically symmetric midi-superspaces [PDF]

, 2007
We quantize the exterior of spherically symmetric vacuum spacetimes using a midi-superspace reduction within the Ashtekar new variables. Through a partial gauge fixing we eliminate the diffeomorphism constraint and are left with a Hamiltonian constraint ...
Miguel Campiglia, R. Gambini, J. Pullin
semanticscholar   +1 more source

Modulation of the modulated magnetic structure of an Ho i‐MAX phase described by a magnetic (3+2)‐dimensional superspace group

Acta Crystallographica Section B, Volume 81, Issue 1, Page 37-46, February 2025.
A rare complex incommensurate magnetic structure, an amplitude‐modulated structure which itself is modulated, was determined in the Ho‐based i‐MAX phase (Mo2/3Ho1/3)2GaC. It represents a particularly distinctive case of a 2‐k magnetic structure with no symmetry relation between the propagation vectors.The magnetic structures of the Ho‐based i‐MAX phase
Claire V. Colin, Quanzheng Tao, Christine Opagiste, Rafik Balou, Johanna Rosen, Thierry Ouisse, Václav Petříček   +6 more
wiley   +1 more source

Superalgebra cohomology, the geometry of extended superspaces and superbranes [PDF]

, 2001
We present here a cohomological analysis of the new spacetime superalgebras that arise in the context of superbrane theory. They lead to enlarged superspaces that allow us to write D-brane actions in terms of fields associated with the additional ...
J. A. D. Azc'arraga, J. M. Izquierdo
semanticscholar   +1 more source

Pauli-Lubanski, supertwistors, and the superspinning particle

Journal of High Energy Physics, 2017
We present a novel construction of the super-Pauli-Lubanski pseudo-vector for 4D supersymmetry and show how it arises naturally from the spin-shell constraints in the supertwistor formulation of superparticle dynamics.
Alex S. Arvanitakis, Luca Mezincescu, Paul K. Townsend   +2 more
doaj   +1 more source

High‐performance thermoelectric calcium cobaltite nanoribbon ceramic via electrospinning and dual spark plasma texturing

Journal of the American Ceramic Society, Volume 108, Issue 2, February 2025.
Abstract High‐performance polycrystalline calcium cobaltite ceramic was synthesized via electrospinning of nanoribbons, followed by dual‐process compaction using spark plasma sintering and edge‐free spark plasma texturing. The combination of nanoribbon electrospinning and this multistage sintering technique was employed for the first time and resulted ...
Katharina Kruppa, Itzhak I. Maor, Anat Karlin, Frank Steinbach, Gennady E. Shter, Dorothea Stobitzer, Hilke Petersen, Bernd Breidenstein, Meirav Mann‐Lahav, Gideon S. Grader, Armin Feldhoff   +10 more
wiley   +1 more source