Results 11 to 20 of about 2,820 (202)
Journal of High Energy Physics, 2021 We consider, at the linearized level, the superspace formulation of lower-dimensional F-theory. In particular, we describe the embedding of 3D Type II super-gravity of the superstring, or 4D, N = 1 supergravity of M-theory, into the corresponding F ...
William D. Linch, Warren Siegel
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Navigating collinear superspace [PDF]
Journal of High Energy Physics, 2020 We introduce a new set of effective field theory rules for constructing Lagrangians with N $$ \mathcal{N} $$ = 1 supersymmetry in collinear superspace. In the standard superspace treatment, superfields are functions of the coordinates x μ θ α θ † α ⋅ $$ \
Timothy Cohen +3 more
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Journal of High Energy Physics, 2019 Abstract We classify N =1 d = 4 kinematical and aristotelian Lie superalgebras with spa- tial isotropy, but not necessarily parity nor time-reversal invariance. Employing a quater- nionic formalism which makes rotational covariance manifest and simplifies many of the calculations, we find a list of 43 isomorphism classes of Lie ...
José Figueroa-O’Farrill, Ross Grassie
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Magnetic structure determination and refinement using FullProf. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterA 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 ...
Rodriguez-Carvajal J +2 more
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Modulation of the modulated magnetic structure of an Ho i-MAX phase described by a magnetic (3+2)-dimensional superspace group. Corrigendum. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterCorrigendum to Acta Cryst. (2025), B81, 37–46.The name of one of the authors in the article by Colin et al.[Acta Cryst. (2025), B81, 37–46] is corrected.
Colin CV +6 more
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Magnetic structure determination of multiple phases in the multiferroic candidate GdCrO<sub>3</sub>. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterUsing neutron powder diffraction, the successive magnetic structures in multiferroic candidate GdCrO3 have been determined, including a complex incommensurate phase below 2.3 K. The symmetry analysis uses a combination of little group formalism and superspace group approach highlighting the strength of each method and the results are reported using the
Manuel P +7 more
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Modulation of the modulated magnetic structure of an Ho i-MAX phase described by a magnetic (3+2)-dimensional superspace group. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterA 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
Colin CV +6 more
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The incommensurate composite YxOs4B4 (x = 1.161). [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterTetragonal YxOs4B4 (x = 1.161) is an incommensurate composite of columns of Y atoms in a three‐dimensional Os4B4 framework. The structure was refined using the superspace approach.YxOs4B4 (x = 1.161) crystallizes as a tetragonal incommensurate composite of columns of Y atoms extending along [001] in an Os4B4 framework.
Stöger B, Sologub O, Salamakha L.
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<i>MagStREXS</i>, a crystallographic computer program to determine magnetic structures through resonant elastic X-ray scattering data. I. Fundamental equations. [PDF]
J Appl CrystallogrThis article presents the fundamental concepts and equations implemented in the program MagStREXS to determine magnetic structures based on resonant elastic X‐ray scattering diffraction data.Resonant elastic X‐ray scattering (REXS) is an experimental technique that can be highly valuable for studying magnetic structures in certain scenarios.
Bereciartua PJ +2 more
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Journal of High Energy Physics, 2008 17 pages, revised ...
Baulieu, Laurent, Martin, Alexis
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