Results 11 to 20 of about 133,086 (323)

Non-invertible symmetries and LSM-type constraints on a tensor product Hilbert space [PDF]

open access: yesSciPost Physics
We discuss the exact non-invertible Kramers-Wannier symmetry of 1+1d lattice models on a tensor product Hilbert space of qubits. This symmetry is associated with a topological defect and a conserved operator, and the latter can be presented as a matrix ...
Nathan Seiberg, Sahand Seifnashri, Shu-Heng Shao
doaj   +2 more sources

Topologies on quotient space of matrices via semi‐tensor product [PDF]

open access: yesAsian Journal of Control, 2018
An equivalence of matrices via semi‐tensor product (STP) is proposed. Using this equivalence, the quotient space is obtained. Parallel and sequential arrangements of the natural projection on different shapes of matrices lead to the product topology and ...
D. Cheng, Zequn Liu
semanticscholar   +5 more sources

Heredity of Tensor Products of Topological Algebras

open access: closedMathematische Annalen, 1966
The purpose of the present paper is to put into the context of the theory of tensor products of topological algebras [9], [10] some recent results concerning certain properties of permanence of a tensor product of Banach algebras [4], [5]. A brief report of the main results of this paper has been given in [11].
Anastasios Mallios
  +5 more sources

Topological properties of spaces of ideals of the minimal tensor product [PDF]

open access: green, 2009
One shows that for two C^*-algebras A_1 and A_2 any continuous function on Prim(A_1)\times Prim(A_2) can be continuously extended to Prim(A_1\otimes A_2) provided it takes its values in a T_1 topological space. This generalizes a 1977 result of L.G. Brown. A new proof is given for a result of R.J.
Aldo J. Lazar
openalex   +3 more sources

Hochschild cohomology of tensor products of topological algebras [PDF]

open access: bronzeProceedings of the Edinburgh Mathematical Society, 2010
AbstractWe describe explicitly the continuous Hochschild and cyclic cohomology groups of certain tensor products of $\widehat{\otimes}$-algebras which are Fréchet spaces or nuclear DF-spaces. To this end we establish the existence of topological isomorphisms in the Künneth formula for the cohomology of complete nuclear DF-complexes and in the Künneth ...
Zinaida A. Lykova
openalex   +3 more sources

Topological Tensor Products of Unbounded Operator Algebras on Frechet Domains

open access: bronzePublications of the Research Institute for Mathematical Sciences, 1997
The aim of this paper is to investigate topological properties of unbounded operator algebras \mathcal A⊂L^+(D) and its stability under the formation of topological tensor products \mathcal A_1 \otimes_\alpha \mathcal A_2 . It is used
Wolf‐Dieter Heinrichs
openalex   +3 more sources

Tensor product representation of a topological ordered phase: Necessary symmetry conditions [PDF]

open access: green, 2010
The tensor product representation of quantum states leads to a promising variational approach to study quantum phase and quantum phase transitions, especially topological ordered phases which are impossible to handle with conventional methods due to ...
Isaac L. Chuang   +4 more
openalex   +3 more sources

Topological tensor products and asymptotic developments [PDF]

open access: closedAnnales de la Faculté des sciences de Toulouse : Mathématiques, 1999
The author shows that the space of holomorphic functions of several variables which have an asymptotic development in the classical sense of Poincaré and in the sense of Gevrey are nuclear spaces, and that they coincide with the complete tensor product of copies of the corresponding space in the one variable case.
Jorge Mozo-Fernández
openalex   +3 more sources

Locally Purified Density Operators for Symmetry-Protected Topological Phases in Mixed States

open access: yesPhysical Review X
We propose a tensor network approach known as the locally purified density operator (LPDO) to investigate the classification and characterization of symmetry-protected topological phases in open quantum systems.
Yuchen Guo   +4 more
doaj   +2 more sources

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