Results 11 to 20 of about 5,305 (220)

Supertwistor realisations of AdS superspaces [PDF]

European Physical Journal C: Particles and Fields, 2022
We propose supertwistor realisations of (p, q) anti-de Sitter (AdS) superspaces in three dimensions and $${\mathcal {N}}$$ N -extended AdS superspaces in four dimensions.
Sergei M. Kuzenko, Gabriele Tartaglino-Mazzucchelli   +1 more
doaj   +2 more sources

Orthorhombic charge density wave on the tetragonal lattice of EuAl4 [PDF]

IUCrJ, 2022
EuAl4 possesses the BaAl4 crystal structure type with tetragonal symmetry I4/mmm. It undergoes a charge density wave (CDW) transition at TCDW = 145 K and features four consecutive antiferromagnetic phase transitions below 16 K. Here we use single-crystal
Sitaram Ramakrishnan, Surya Rohith Kotla, Toms Rekis, Jin-Ke Bao, Claudio Eisele, Leila Noohinejad, Martin Tolkiehn, Carsten Paulmann, Birender Singh, Rahul Verma, Biplab Bag, Ruta Kulkarni, Arumugam Thamizhavel, Bahadur Singh, Srinivasan Ramakrishnan, Sander van Smaalen   +15 more
doaj   +2 more sources

Circumnavigating collinear superspace [PDF]

Journal of High Energy Physics, 2020
AbstractIn this paper, we extend the collinear superspace formalism to include the full range of$$ \mathcal{N} $$N= 1 supersymmetric interactions. Building on the effective field theory rules developed in a companion paper —Navigating Collinear Superspace[1] — we construct collinear superspace Lagrangians for theories with non-trivialF- andD-term ...
Andrew J. Larkoski, Jesse Thaler, Jesse Thaler, Timothy Cohen, Gilly Elor   +4 more
openaire   +6 more sources

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 Mater
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
Colin CV, Tao Q, Opagiste C, Balou R, Rosen J, Ouisse T, Petříček V.   +6 more
europepmc   +2 more sources

The incommensurate composite Y_xOs₄B₄ (x = 1.161). [PDF]

Acta Crystallogr B Struct Sci Cryst Eng Mater
Tetragonal 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.
europepmc   +2 more sources

Navigating collinear superspace [PDF]

Journal of High Energy Physics, 2020
AbstractWe introduce a new set of effective field theory rules for constructing Lagrangians with$$ \mathcal{N} $$N= 1 supersymmetry in collinear superspace. In the standard superspace treatment, superfields are functions of the coordinates$$ \left({x}^{\mu },{\theta}^{\alpha },{\theta}^{\dagger \overset{\cdot }{\alpha }}\right) $$xμθαθ†α⋅, and ...
Andrew J. Larkoski, Gilly Elor, Timothy Cohen, Jesse Thaler, Jesse Thaler   +4 more
openaire   +6 more sources

A superspace approach to branes and supergravity [PDF]

arXiv, 2000
Recent developments in string and M theory rely heavily on supersymmetry suggesting that a revival of superspace techniques in ten and eleven dimensions may be advantageous. Here we discuss three topics of current interest where superspace is already playing an important role and where an improved understanding of superspace might provide additional ...
B.E.W. Nilsson
arxiv   +3 more sources

Superspace supervortices [PDF]

Physics Letters B, 1994
We present the theory describing supersymmetrical vortices in the curved superspace of the (1,0) supergravity. The action is defined as a (1,0) locally supersymmetric $SU(2)/U(1)$ coset perturbed by the cosmological constant-like term. The perturbation is such that it preserves the integrability of the coset model.
O. A. Soloviev, S. J. Gates Jr.
openaire   +3 more sources

Occupational modulation in the (3+1)-dimensional incommensurate structure of (2S,3S)-2-amino-3-hydroxy-3-methyl-4-phenoxybutanoic acid dihydrate. [PDF]

Acta Crystallogr C Struct Chem
The (3+1)‐dimensional incommensurate structure of (2S,3S)‐2‐amino‐3‐hydroxy‐3‐methyl‐4‐phenoxybutanoic acid dihydrate (I·2H2O), in which one of the water molecules is disordered over two positions and each position exhibits occupational modulation, can be well refined in superspace, and in the average and supercell approximations.
Sanders KM, Bruffy SK, Buller AR, Petříček V, Guzei IA.   +4 more
europepmc   +2 more sources

Analysis of magnetic structures in JANA2020. [PDF]

Acta Crystallogr B Struct Sci Cryst Eng Mater
The magnetic option of the crystallographic program JANA2020 is a specific tool for solution, analysis, and description of modulated and non‐modulated magnetic structures.JANA2020 is a program developed for the solution and refinement of regular, twinned, modulated, and composite crystal structures. In addition, JANA2020 also includes a magnetic option
Henriques MS, Petříček V, Goswami S, Dušek M.   +3 more
europepmc   +2 more sources