The Riemannian curvature identities for the torsion connection on Spin(7)${\rm Spin}(7)$ —Manifold and generalized Ricci solitons
Sign Up to like & getrecommendations! Published in 2025 at "Mathematische Nachrichten"
DOI: 10.1002/mana.12021
Abstract: It is shown that on compact Spin(7)${\rm Spin}(7)$ ‐manifold with exterior derivative of the Lee form lying in the Lie algebra Spin(7)${\rm Spin}(7)$ the curvature R$R$ of the Spin(7)${\rm Spin}(7)$ –torsion connection R∈S2Λ2$R\in S^2\Lambda ^2$… read more here.
Keywords: spin spin; spin; torsion connection; spin manifold ... See more keywords
RPA(D) and HRPA(D): Calculating NMR Spin–Spin Coupling Constants in Free Amino Acid Residues
Sign Up to like & getrecommendations! Published in 2025 at "Magnetic Resonance in Chemistry"
DOI: 10.1002/mrc.5514
Abstract: ABSTRACT In the pursuit of computational methods which boast both low computational cost and a high degree of accuracy, the SOPPA‐derived methods RPA(D) and HRPA(D) are showing great promise. This study aims to further the… read more here.
Keywords: coupling constants; spin spin; rpa hrpa; calculating nmr ... See more keywords
Microscopic theory of spin–spin and spin–lattice relaxation of bound protons in cellular and myelin membranes—A lateral diffusion model (LDM)
Sign Up to like & getrecommendations! Published in 2022 at "Magnetic Resonance in Medicine"
DOI: 10.1002/mrm.29430
Abstract: Deciphering salient features of biological tissue cellular microstructure in health and diseases is an ultimate goal of MRI. While most MRI approaches are based on studying MR properties of tissue “free” water indirectly affected by… read more here.
Keywords: microscopic theory; myelin membranes; cellular myelin; spin ... See more keywords
Positivity bounds for massive spin-1 and spin-2 fields
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep03(2019)182
Abstract: A bstractWe apply the recently developed positivity bounds for particles with spin, applied away from the forward limit, to the low energy effective theories of massive spin-1 and spin-2 theories. For spin-1 theories, we consider… read more here.
Keywords: spin spin; massive gravity; spin; massive spin ... See more keywords
Cubic interactions for massless and partially massless spin-1 and spin-2 fields
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2024)019
Abstract: We perform a complete classification of the consistent two-derivative cubic couplings for a system containing an arbitrary number of massless spin-1, massless spin-2, and partially massless (PM) spin-2 fields in D-dimensional (anti-)de Sitter space. In… read more here.
Keywords: interactions massless; spin fields; spin spin; massless spin ... See more keywords
On generic flag varieties of Spin(11) and Spin(12)
Sign Up to like & getrecommendations! Published in 2018 at "manuscripta mathematica"
DOI: 10.1007/s00229-017-0994-8
Abstract: Let X be the variety of Borel subgroups of a split semisimple algebraic group G over a field, twisted by a generic G-torsor. Conjecturally, the canonical epimorphism of the Chow ring $$\mathop {\mathrm {CH}}\nolimits X$$CHX… read more here.
Keywords: mathop mathrm; mathrm nolimits; spin spin; generic flag ... See more keywords
Spin–Spin and Spin–Phonon Interaction as a Nature of Microwave Absorption in He II
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Low Temperature Physics"
DOI: 10.1007/s10909-019-02173-y
Abstract: Experimentally observed with dielectric disk resonator technique, microwave absorption–amplification in liquid He II below $$\lambda $$λ-point has been interpreted theoretically as a phenomenon in electrically active dielectric medium with low-energy excitations which exist near the… read more here.
Keywords: spin spin; microwave absorption; spin; hbox ... See more keywords
Equal Random Crystal Field of Mixed Spin-1 and Spin-3/2 System
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-017-4098-1
Abstract: The mixed spin-1 and spin-3/2 Ising system is investigated on the Bethe lattice at random distribution of crystal field which are taken equal at both spin sites. The investigations of thermal variations of the sublattice,… read more here.
Keywords: system; spin; spin spin; crystal field ... See more keywords
Magnetic Properties of a Mixed Spin-3/2 and Spin-1/2 Ising Nanowire with Nearest and Next-Nearest Neighbour Interactions
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DOI: 10.1007/s10948-017-4468-8
Abstract: The magnetic properties and the hysteresis behaviours of a mixed spin-3/2 and spin-1/2 cubic Ising nanowire have been studied by the use of the Monte Carlo simulations. To investigate the effects of the exchange interaction… read more here.
Keywords: ising nanowire; magnetic properties; nanowire; spin spin ... See more keywords
Compensation Behavior in a Ferrimagnetic Mixed Spin-7/2 and Spin-3: Monte Carlo Simulation
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-018-4894-2
Abstract: The ferrimagnetic systems have been extensively investigated because of their fascinating properties. In this paper, the mixed spin-7/2 and spin-3 Ising system with periodic boundary conditions on a square lattice has been studied using the… read more here.
Keywords: system; monte carlo; carlo simulation; spin ... See more keywords
Cubic forms, anomaly cancellation and modularity
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Mathematics"
DOI: 10.1016/j.aim.2021.108023
Abstract: Motivated by the cubic forms and anomaly cancellation formulas of Witten-Freed-Hopkins, we give some new cubic forms on spin, spin$^c$, spin$^{w_2}$ and orientable 12-manifolds respectively. We relate them to $\eta$-invariants when the manifolds are with… read more here.
Keywords: cancellation modularity; anomaly cancellation; cubic forms; spin spin ... See more keywords