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Theory of Quantum Information - the David R. Cheriton School of
Theory of Quantum Information - the David R. Cheriton School of

The Computational Complexity of Linear Optics
The Computational Complexity of Linear Optics

Boundary conditions for integrable quantum systems
Boundary conditions for integrable quantum systems

... boundary conditions. As regards the systems on the finite interval with independent boundary conditions on each end, only a few cases solved either by the coordinate Bethe ansatz or directly are described in the literature. These are the Bose (Gaudin 1971, 1983) and Fermi gases (Woynarovich 1985), t ...
Haag`s Theorem in Renormalisable Quantum Field Theories
Haag`s Theorem in Renormalisable Quantum Field Theories

... • First, all approaches to construct quantum field models in a way seen as mathematically sound and rigorous employ methods from operator theory and stochastic analysis, the latter only in the Euclidean case. This is certainly natural given the corresponding heuristically very successful notions use ...
Endomorphism Bialgebras of Diagrams and of Non
Endomorphism Bialgebras of Diagrams and of Non

QUANTUM MECHANICS B PHY-413 Note Set No. 7
QUANTUM MECHANICS B PHY-413 Note Set No. 7

... exact or approximate spherical symmetry. This, together with angular momentum’s association with rotation, demands that we consider writing down the angular momentum operators in spherical polar coordinates; this also leads to a great simplification and a recognition that the orbital angular momentu ...
Shankar`s Principles of Quantum Mechanics
Shankar`s Principles of Quantum Mechanics

here
here

...  “Spinless” p-wave superconductors  Now, slowly turn on the pairing  Total Hamiltonian becomes ...
Quantum Mechanics for Pedestrians 1: Fundamentals
Quantum Mechanics for Pedestrians 1: Fundamentals

... Certainly, there may be different answers to this question. After all, quantum mechanics is such a broad field that a single textbook cannot cover all the relevant topics. A selection or prioritization of subjects is necessary per se and, moreover, the physical and mathematical foreknowledge of the ...
Tensor Product Methods and Entanglement
Tensor Product Methods and Entanglement

... other many-particle systems, e.g., spin systems, alternative representations have been proposed, resulting in the development of so-called matrix product states (MPS).[18–21] The MPS method represents the wavefunction of a system of d components or “sites” (corresponding, e.g., to molecular orbitals ...
Lecture (12) - MIT OpenCourseWare
Lecture (12) - MIT OpenCourseWare

... Exercise 2.11.1. Show that for any M ∈ M the object Hom(M, M ) with the multiplication defined above is an algebra (in particular, define the unit morphism!). Theorem 2.11.2. Let M be a module category over C, and assume that M ∈ M satisfies two conditions: 1. The functor Hom(M, •) is right exact (note ...
Observing a coherent superposition of an atom and a
Observing a coherent superposition of an atom and a

Bounding the quantum dimension with contextuality Linköping University Post Print
Bounding the quantum dimension with contextuality Linköping University Post Print

... or [A,C] = 0. The reason is that, if B is not the identity, then it has two one-dimensional eigenspaces. These are shared with A and C, so A and C must be simultaneously diagonalizable. Considering the KCBS operator χKCBS , the claim is trivial if A, . . . ,E are all compatible because then the rela ...
M15/07
M15/07

THE MIRROR CONJECTURE FOR MINUSCULE
THE MIRROR CONJECTURE FOR MINUSCULE

QUANTUM COMPUTING: AN OVERVIEW
QUANTUM COMPUTING: AN OVERVIEW

Quantum Designs - Gerhard Zauner
Quantum Designs - Gerhard Zauner

Problems in Number Theory related to Mathematical Physics
Problems in Number Theory related to Mathematical Physics

... The total number of primes is infinite (as mentioned above) and this fact has been known since ancient times and is attributed to Euclid. The proof is quite simple and we will give the reasoning: The idea is to prove the statement by contradiction. This means that instead of trying to prove directly ...
Introduction to Integrable Models
Introduction to Integrable Models

... AEC Bern WS 2014 ...
Geometric phases in quantum systems of pure and mixed state
Geometric phases in quantum systems of pure and mixed state

Heisenberg Spin Chains : from Quantum Groups to
Heisenberg Spin Chains : from Quantum Groups to

Lecture Notes in Quantum Mechanics Doron Cohen
Lecture Notes in Quantum Mechanics Doron Cohen

Lecture notes: Group theory and its applications in physics
Lecture notes: Group theory and its applications in physics

... complicated (system) of differential equations, which in exact form only in few exceptional cases (of integrable systems) is possible. On the other hand, it often happens that given an arbitrary solution q(t) one can construct a family of solutions by application of certain transformation to it: q(t ...
Certainty relations, mutual entanglement, and nondisplaceable
Certainty relations, mutual entanglement, and nondisplaceable

here
here

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Compact operator on Hilbert space

In functional analysis, compact operators on Hilbert spaces are a direct extension of matrices: in the Hilbert spaces, they are precisely the closure of finite-rank operators in the uniform operator topology. As such, results from matrix theory can sometimes be extended to compact operators using similar arguments. In contrast, the study of general operators on infinite-dimensional spaces often requires a genuinely different approach.For example, the spectral theory of compact operators on Banach spaces takes a form that is very similar to the Jordan canonical form of matrices. In the context of Hilbert spaces, a square matrix is unitarily diagonalizable if and only if it is normal. A corresponding result holds for normal compact operators on Hilbert spaces. (More generally, the compactness assumption can be dropped. But, as stated above, the techniques used are less routine.)This article will discuss a few results for compact operators on Hilbert space, starting with general properties before considering subclasses of compact operators.
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