Results 81 to 90 of about 5,554 (189)

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 ...
de Azcárraga, J. A., Izquierdo, J. M.
core   +2 more sources

Magnetic structure determination and refinement using FullProf

Acta Crystallographica Section B, Volume 81, Issue 3, Page 302-317, June 2025.
A description of the FullProf Suite of programs for magnetic structure determination is given. Different types of magnetic structure factors are discussed, and links to examples and tutorials for using the programs are provided.The study of magnetic structures from a crystallographic perspective remains a niche field, largely confined to physical ...
Juan Rodriguez-Carvajal, Javier Gonzalez-Platas, Nebil A. Katcho   +2 more
wiley   +1 more source

Supergeometry and Arithmetic Geometry [PDF]

, 2006
We define a superspace over a ring $R$ as a functor on a subcategory of the category of supercommutative $R$-algebras. As an application the notion of a $p$-adic superspace is introduced and used to give a transparent construction of the Frobenius map on
A. Schwarz, Berthelot, Freund, I. Shapiro, Konechny, Kontsevich, Mazur, Schimmrigk, Schwarz, Schwarz, Schwarz, Voronov   +11 more
core   +1 more source

Asymmetric structuring of ceramic composite via co‐electrospun sodium cobaltite and calcium cobaltite nanoribbons

Journal of the American Ceramic Society, Volume 108, Issue 5, May 2025.
Abstract An asymmetrically structured sodium cobaltite–calcium cobaltite ceramic composite with enhanced texture was synthesized using co‐electrospinning of nanoribbons and rapid thermal processing (RTP). Long‐term stability tests revealed that embedding the unstable sodium cobaltite in the chemically more stable calcium cobaltite effectively shields ...
Katharina Kruppa, Itzhak I. Maor, Frank Steinbach, Dorothea Stobitzer, Gennady E. Shter, Meirav Mann‐Lahav, Gideon S. Grader, Armin Feldhoff   +7 more
wiley   +1 more source

Exploring curved superspace [PDF]

Journal of High Energy Physics, 2012
We systematically analyze Riemannian manifolds M that admit rigid supersymmetry, focusing on four-dimensional N=1 theories with a U(1)_R symmetry. We find that M admits a single supercharge, if and only if it is a Hermitian manifold. The supercharge transforms as a scalar on M.
Thomas T. Dumitrescu, Guido Festuccia, Nathan Seiberg   +2 more
openaire   +4 more sources

The quantum chiral Minkowski and conformal superspaces [PDF]

, 2010
We give a quantum deformation of the chiral super Minkowski space in four dimensions as the big cell inside a quantum super Grassmannian. The quantization is performed in such way that the actions of the Poincar\'e and conformal quantum supergroups on ...
Cervantes, D., Fioresi, R., Lledo, M. A.
core   +3 more sources

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

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

Superfield Theories in Tensorial Superspaces and the Dynamics of Higher Spin Fields

, 2004
We present the superfield generalization of free higher spin equations in tensorial superspaces and analyze tensorial supergravities with GL(n) and SL(n) holonomy as a possible framework for the construction of a non-linear higher spin field theory ...
B. de Wit, B.M. Zupnik, B.M. Zupnik, C. Fronsdal, D. Sorokin, Dmitri Sorokin, F.A. Berends, G. Bonelli, G. Bonelli, I.A. Bandos, I.A. Bandos, I.A. Bandos, I.A. Bandos, I.A. Bandos, I.A. Bandos, I.A. Bandos, I.L. Buchbinder, I.L. Buchbinder, Igor Bandos, J. Engquist, J. Wess, M. Plyushchay, M. Plyushchay, M.A. Vasiliev, M.A. Vasiliev, M.A. Vasiliev, M.A. Vasiliev, M.A. Vasiliev, M.A. Vasiliev, Mario Tonin, N. Dragon, N. Seiberg, O.A. Gelfond, P.S. Howe, Paolo Pasti, S.J. Gates, T. Damour, W. Siegel, X. Bekaert   +38 more
core   +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