Results 11 to 20 of about 11,887 (225)
Hilbert Space Fragmentation and Commutant Algebras [PDF]
Physical Review X, 2022 We study the phenomenon of Hilbert space fragmentation in isolated Hamiltonian and Floquet quantum systems using the language of commutant algebras, the algebra of all operators that commute with each local term that appears in the Hamiltonian or each ...
Sanjay Moudgalya, Olexei I Motrunich
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Exhaustive Characterization of Quantum Many-Body Scars Using Commutant Algebras
Physical Review X, 2022 We study quantum many-body scars (QMBS) in the language of commutant algebras, which are defined as symmetry algebras of families of local Hamiltonians.
Sanjay Moudgalya, Olexei I Motrunich
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Numerical methods for detecting symmetries and commutant algebras [PDF]
Physical Review B, 2023 For families of Hamiltonians defined by parts that are local, the most general definition of a symmetry algebra is the commutant algebra, i.e., the algebra of operators that commute with each local part.
Sanjay Moudgalya, Olexei I Motrunich
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Commutant Lifting for Commuting Row Contractions [PDF]
Bulletin of the London Mathematical Society, 2009 If $T= \big[ T_1 ... T_n\big]$ is a row contraction with commuting entries, and the Arveson dilation is $\tilde T= \big[ \tilde T_1 ... \tilde T_n\big]$, then any operator $X$ commuting with each $T_i$ dilates to an operator $Z$ of the same norm which ...
Davidson, Kenneth R., Le, Trieu
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Commuting Toeplitz Operators With Mixed Quasihomogeneous and Analytic Symbols
Journal of MathematicsA major open problem in the theory of Toeplitz operators on the analytic Bergman space over the unit disk is the characterization of the commutant of a given Toeplitz operator, that is, the set of all bounded Toeplitz operators that commute with it.
Aissa Bouhali +2 more
doaj +2 more sources
Relative commutant pictures of Roe algebras
Communications in Mathematical Physics, 2018 Let X be a proper metric space, which has finite asymptotic dimension in the sense of Gromov (or more generally, straight finite decomposition complexity of Dranishnikov and Zarichnyi).
Spakula, Jan, Tikuisis, Aaron
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From Symmetries to Commutant Algebras in Standard Hamiltonians [PDF]
Social Science Research Network, 2022 In this work, we revisit several families of standard Hamiltonians that appear in the literature and discuss their symmetries and conserved quantities in the language of commutant algebras. In particular, we start with families of Hamiltonians defined by
Sanjay Moudgalya, O. Motrunich
semanticscholar +1 more source
Defect partition function from TDLs in commutant pairs [PDF]
Modern Physics Letters A, 2021 In this paper, we study topological defect lines in two character rational conformal field theories. Among them one set of two character theories are commutant pairs in [Formula: see text] conformal field theory.
Subramanya Hegde, Dileep P. Jatkar
semanticscholar +1 more source
Multiplication by a finite Blaschke product on weighted Bergman spaces: Commutant and reducing subspaces [PDF]
Journal of Mathematical Analysis and Applications, 2021 . We provide a characterization of the commutant of analytic Toeplitz operators T B induced by finite Blaschke products B acting on weighted Bergman spaces which, as a particular instance, yields the case B ( z ) = z n on the Bergman space solved recently
Eva A. Gallardo-Guti'errez +1 more
semanticscholar +1 more source
Commutative–non-commutative dualities [PDF]
Canadian Journal of Physics, 2020 We show that it is in principle possible to construct dualities between commutative and non-commutative theories in a systematic way. This construction exploits a generalization of the exact renormalization group equation (ERG). We apply this to the simple case of the Landau problem and then generalize it to the free and interacting non-canonical ...
Scholtz, F.G. +2 more
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