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Bilinear pseudodifferential operators with symbols in the bilinear analog of all the H\"ormander classes are considered and the possibility of a symbolic calculus for the transposes of the operators in such classes is investigated. Precise…

Classical Analysis and ODEs · Mathematics 2010-01-05 Árpád Bényi , Diego Maldonado , Virginia Naibo , Rodolfo H. Torres

A generalization of duality transformations for arbitrary Lorentz tensors is presented, and a systematic scheme for constructing the dual descriptions is developed. The method, a purely Lagrangian approach, is based on a first order parent…

High Energy Physics - Theory · Physics 2009-11-07 H. Casini , R. Montemayor , Luis F. Urrutia

Spinorial tools have recently come back to fashion in loop gravity and spin foams. They provide an elegant tool relating the standard holonomy-flux algebra to the twisted geometry picture of the classical phase space on a fixed graph, and…

General Relativity and Quantum Cosmology · Physics 2012-04-17 Maite Dupuis , Simone Speziale , Johannes Tambornino

By scrutinizing the singular sector of the Lounesto spinor classification, we investigate the correct definition of the expansion coefficient functions of local fermionic fields within a fully Lorentz covariant theory. As we can observe, a…

General Physics · Physics 2024-02-06 R. J. Bueno Rogerio , C. H. Coronado Villalobos

We present an analytical framework capable of describing spin-waves dynamic in magnetic hetero-structures composed of a pair of exchange-decoupled magnetic layers separated by a nonmagnetic spacer, focusing in particular on garnet-based…

Applied Physics · Physics 2026-05-12 A. Del Giacco , L. Menna , M. J. Gross , O. Wojewoda , V. Levati , M. Urbanek , S. Kurdi , E. Albisetti , D. Petti , C. A. Ross

A classification of double flag varieties of complexity 0 and 1 is obtained. An application of this problem to decomposing tensor products of irreducible representations of semisimple Lie groups is considered.

Algebraic Geometry · Mathematics 2015-06-04 Elizaveta Ponomareva

We present a systematic technique for constructing Lorentz covariant orbital-spin ($LS$) bases for matrix elements of local operators and the associated form factors, thereby extending the traditional multipole expansion to a Lorentz…

High Energy Physics - Phenomenology · Physics 2026-05-06 Hong Huang , Tuo Tan , Yi-Ning Wang , Jiang-Hao Yu

We construct a two parameter family of 2-particle Hamiltonians closed under the duality operation of interchanging the (relative) momentum and coordinate. Both coordinate and momentum dependence are elliptic, and the modulus of the momentum…

High Energy Physics - Theory · Physics 2009-10-31 H. W. Braden , A. Marshakov , A. Mironov , A. Morozov

Using the Weinberg-Soper formalism we construct the front form $(j,0)\oplus(0,j)$ spinors. Explicit expressions for the generalised Melosh transformations up to spin two are obtained. The formalism, without explicitly invoking any wave…

Nuclear Theory · Physics 2008-11-26 D. V. Ahluwalia , Mikolaj Sawicki

We relate degree one grasper families of embedded circles to various constructions of diffeomorphisms found in the literature -- theta clasper classes of Watanabe, barbell diffeomorphisms of Budney and Gabai, and twin twists of Gay and…

Geometric Topology · Mathematics 2025-05-05 Danica Kosanović

We show that the trigonometric solitons of the KP hierarchy enjoy a differential-difference bispectral property, which becomes transparent when translated on two suitable spaces of pairs of matrices satisfying certain rank one conditions.…

Exactly Solvable and Integrable Systems · Physics 2008-04-24 Luc Haine

In the Lounesto classification, there are three types of regular spinors. They are classified by the condition that at least one of the scalar or pseudo scalar norms are non-vanishing. The Dirac spinors are regular spinors because their…

High Energy Physics - Theory · Physics 2024-11-15 Cheng-Yang Lee

Spinor-vector dualities have been established in various exact string realisations like orbifold and free fermionic constructions. This paper aims to investigate possibility of having spinor-vector dualities on smooth geometries in the…

High Energy Physics - Theory · Physics 2021-07-14 A. E. Faraggi , S. Groot Nibbelink , M. Hurtado-Heredia

Among the properties of homogeneity of incidence structures flag-transitivity obviously is a particularly important and natural one. Consequently, in the last decades also flag-transitive Steiner tdesigns (i.e. flag-transitive t-(v,k,1)…

Combinatorics · Mathematics 2018-07-03 Michael Huber

Let K \subset Y be a knot in a three manifold which admits a longitude-framed surgery such that the surgered manifold has first Betti number greater than that of Y. We find a formula which computes the twisted Floer homology of the surgered…

Geometric Topology · Mathematics 2009-10-13 Evan Fink

In this paper we use the G-spin theorem to show that the Davis hyperbolic 4-manifold admits harmonic spinors. This is the first example of a closed hyperbolic 4-manifold that admits harmonic spinors. We also explicitly describe the Spinor…

Geometric Topology · Mathematics 2018-03-20 John G. Ratcliffe , Daniel Ruberman , Steven T. Tschantz

We proceed to derive equations for the symmetric tensor of the second rank on the basis of the Bargmann-Wigner formalism in a straightforward way. The symmetric multispinor of the fourth rank is used. It is constructed out of the Dirac…

Mathematical Physics · Physics 2007-05-23 Valeri V. Dvoeglazov

This work has as the main aim to explore the nature of the fermionic fields, through a classification of spinor fields about physical space of interest, such as the bulk and the compactified space $S^7$ from the supergravity theories. This…

High Energy Physics - Theory · Physics 2017-06-20 K. P. S. de Brito

In this article we consider simultaneous T-dualization of type II superstring action in pure spinor formulation. Simultaneous T-dualization means that we make T-dualization at the same time along some subset of initial coordinates marked by…

High Energy Physics - Theory · Physics 2019-01-04 Bojan Nikolic , Branislav Sazdovic

In this theoretical communication we look towards understand the underlying phenomenology concerning the Elko spinors within VSR theory. The program to be accomplished here start when we define the eigenspinors of the charge conjugation…

High Energy Physics - Theory · Physics 2019-07-22 L. C. Duarte , R. de C. Lima , R. J. Bueno Rogerio , C. H. Coronado Villalobos