Results 21 to 30 of about 163,371 (273)

A note on cocycles of unitary representations [PDF]

Proceedings of the American Mathematical Society, 1976
Given a unitary representation U U of a locally compact abelian group G G , we investigate the relationship between two cocycles a 1 , a 2 : V a 1
Parry, W., Schmidt, K.
openaire   +1 more source

Numerical integration of quantum time evolution in a curved manifold

Physical Review Research, 2021
The numerical integration of the Schrödinger equation by discretization of time is explored for the curved manifolds arising from finite representations based on evolving basis states.
Jessica F. K. Halliday, Emilio Artacho
doaj   +1 more source

(Non-)unitarity of strictly and partially massless fermions on de Sitter space

Journal of High Energy Physics, 2023
We present the dictionary between the one-particle Hilbert spaces of totally symmetric tensor-spinor fields of spin s = 3/2, 5/2 with any mass parameter on D-dimensional (D ≥ 3) de Sitter space (dS D ) and Unitary Irreducible Representations (UIR’s) of ...
Vasileios A. Letsios
doaj   +1 more source

Orthogonal bases in specific generalized symmetry classes of tensors [PDF]

Journal of Mahani Mathematical Research
Let $V$ be a unitary vector space. Suppose $G$ is a permutation group of degree $m$ and $\Lambda$ is an irreducible unitary representation of $G$. We denote by $V_{\Lambda}(G)$ the generalized symmetry class of tensors associated with $G$ and $\Lambda ...
Gholamreza Rafatneshan, Yousef Zamani
doaj   +1 more source

Tight Representations of 0-𝐸-Unitary Inverse Semigroups

Abstract and Applied Analysis, 2011
We study the tight representation of a semilattice in {0,1} by some examples. Then we introduce the concept of the complex tight representation of an inverse semigroup 𝑆 by the concept of the tight representation of the semilattice of idempotents 𝐸 of 𝑆 ...
Bahman Tabatabaie Shourijeh, Asghar Jokar   +1 more
doaj   +1 more source

Classical and quantum particles from nongeneric conformal orbits

Nuclear Physics B, 2023
The nongeneric six- and eightdimensional orbits of SO(4,2) are described in explicitly covariant way. The relevant Hamiltonian dynamical systems are constructed and canonically quantized.
Piotr Kosiński, Paweł Maślanka
doaj   +1 more source

EXTREMAL VECTORS FOR VERMA TYPE REPRESENTATION OF B2

Acta Polytechnica, 2013
Starting from the Verma modules of the algebra B2 we explicitly construct factor representations of the algebra B2 which are connected with the unitary representation of the group SO(3, 2).
Čestmír Burdík, Ondřej Navrátil
doaj   +1 more source

Wilson loops in unitary matrix models at finite N

Journal of High Energy Physics, 2017
It is known that the expectation value of Wilson loops in the Gross-Witten-Wadia (GWW) unitary matrix model can be computed exactly at finite N for arbitrary representations.
Kazumi Okuyama
doaj   +1 more source

Induced PUA representations and selection rules [PDF]

, 1978
Well known properties of induced unitary representations are generalised for induced PUA representations. They are applied to obtain an expression for the multiplicities in the Clebsch-Gordon series of induced PUA representations.
Broek, P.M. van den
core   +4 more sources

Enlargement of Symmetry Groups in Physics: A Practitioner’s Guide

Universe
Wigner’s classification has led to the insight that projective unitary representations play a prominent role in quantum mechanics. The physics literature often states that the theory of projective unitary representations can be reduced to the theory of ...
Lehel Csillag, Julio Marny Hoff da Silva, Tudor Pătuleanu   +2 more
doaj   +1 more source