Results 101 to 110 of about 1,824,364 (240)

Asymptotic behaviour of massless fields and kinematic duality between interior null cones and null infinity

Journal of High Energy Physics
The relation between two branches of solutions (radiative and subradiative) of wave equations on Minkowski spacetime is investigated, for any integer spin, in flat Bondi coordinates where remarkable simplifications occur and allow for exact boundary-to ...
Xavier Bekaert, S. I. Aadharsh Raj
doaj   +1 more source

Invariant tensors under the real representation of unitary group and their applications. [PDF]

, 1958
Tetsuzo Fukami
openalex   +1 more source

Towards Gauging Time-Reversal Symmetry: A Tensor Network Approach

Physical Review X, 2015
It is well known that unitary symmetries can be “gauged,” i.e., defined to act in a local way, which leads to a corresponding gauge field. Gauging, for example, the charge-conservation symmetry leads to electromagnetic gauge fields.
Xie Chen, Ashvin Vishwanath
doaj   +1 more source

The Difficult Unity of the Mediterranean in the Works and Expeditions of Bory de Saint-Vincent (1778-1846)

Culture & History Digital Journal, 2012
For a long time consigned to oblivion, the figure of the soldier and naturalist Bory de Saint-Vincent has been during recent years the subject of a renewed but timid interest.
Carlos Cañete
doaj   +1 more source

Unitary t-groups [PDF]

arXiv, 2018
Relying on the main results of [Guralnick-Tiep], we classify all unitary $t$-groups for $t \geq 2$ in any dimension $d \geq 2$. We also show that there is essentially a unique unitary $4$-group, which is also a unitary $5$-group, but not a unitary $t$-group for any $t \geq 6$.
arxiv  

Contractive Representation Theory for the Unitary Group of C(X, M₂) [PDF]

, 1987
Alan L. T. Paterson
openalex   +1 more source

Sur la Propriété (T) tordue par un produit tensoriel [PDF]

arXiv, 2006
In this article, we consider tensor products of unitary representations by irreducible non-unitary finite dimensional representations of topological groups to define a property that is a twisting of Kazhdan's Property (T). We use the uniform decay of the matrix coefficients of unitary representations, to show that for most of the real semi-simple Lie ...
arxiv  

Weyl calculus and dual pairs

, 2014
We consider a dual pair $(G,G')$, in the sense of Howe, with $G$ compact acting on $L^2(\mathbb R^n)$ for an appropriate $n$ via the Weil Representation. Let $\widetilde{G}$ be the preimage of $G$ in the metaplectic group.
McKee, M., Pasquale, A., Przebinda, T.
core  

Matter as Spectrum of Spacetime Representations

, 2003
Bound and scattering state Schr\"odinger functions of nonrelativistic quantum mechanics as representation matrix elements of space and time are embedded into residual representations of spacetime as generalizations of Feynman propagators.
Saller, Heinrich
core  

Lie supergroups, unitary representations, and invariant cones [PDF]

arXiv, 2010
The main result of this article is an application of the theory of invariant convex cones of Lie algebras to the study of unitary representations of Lie supergroups. It also includes an exposition of recent results of the second author on the classification of irreducible unitary representations of nilpotent Lie supergroups using the method of ...
arxiv