Modular Completely Dirichlet forms as Squares of Derivations
- URL: http://arxiv.org/abs/2307.04502v1
- Date: Mon, 10 Jul 2023 11:46:51 GMT
- Title: Modular Completely Dirichlet forms as Squares of Derivations
- Authors: Melchior Wirth
- Abstract summary: We show that certain closable derivations on the GNS Hilbert space associated with a non-tracial weight on a von Neumann algebra give rise to GNS-symmetric semigroups of contractive completely positive maps on the von Neumann algebra.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We prove that certain closable derivations on the GNS Hilbert space
associated with a non-tracial weight on a von Neumann algebra give rise to
GNS-symmetric semigroups of contractive completely positive maps on the von
Neumann algebra.
Related papers
- Hilbert space representation for quasi-Hermitian position-deformed Heisenberg algebra and Path integral formulation [0.0]
We show that position deformation of a Heisenberg algebra leads to loss of Hermiticity of some operators that generate this algebra.
We then construct Hilbert space representations associated with these quasi-Hermitian operators that generate a quasi-Hermitian Heisenberg algebra.
We demonstrate that the Euclidean propagator, action, and kinetic energy of this system are constrained by the standard classical mechanics limits.
arXiv Detail & Related papers (2024-04-10T15:11:59Z) - On reconstruction of states from evolution induced by quantum dynamical
semigroups perturbed by covariant measures [50.24983453990065]
We show the ability to restore states of quantum systems from evolution induced by quantum dynamical semigroups perturbed by covariant measures.
Our procedure describes reconstruction of quantum states transmitted via quantum channels and as a particular example can be applied to reconstruction of photonic states transmitted via optical fibers.
arXiv Detail & Related papers (2023-12-02T09:56:00Z) - Enriching Diagrams with Algebraic Operations [49.1574468325115]
We extend diagrammatic reasoning in monoidal categories with algebraic operations and equations.
We show how this construction can be used for diagrammatic reasoning of noise in quantum systems.
arXiv Detail & Related papers (2023-10-17T14:12:39Z) - Mappings preserving quantum Renyi's entropies in von Neumann algebras [0.0]
A normal positive linear unital map on a semifinite von Neumann algebra leaving the trace invariant does not change fixed quantum Renyi's entropy of the density of a normal state.
It is also shown that such a map does not change the entropy of any density if and only if it is a Jordan *-isomorphism on the algebra.
arXiv Detail & Related papers (2023-02-05T02:41:39Z) - Orthogonal Unitary Bases and a Subfactor Conjecture [0.0]
We show that any finite dimensional von Neumann algebra admits an orthonormal unitary basis with respect to its standard trace.
We also show that a finite dimensional von Neumann subalgebra of $M_n(mathbbC)$ admits an orthonormal unitary basis under normalized matrix trace.
arXiv Detail & Related papers (2022-11-21T18:53:42Z) - Quantum teleportation in the commuting operator framework [63.69764116066747]
We present unbiased teleportation schemes for relative commutants $N'cap M$ of a large class of finite-index inclusions $Nsubseteq M$ of tracial von Neumann algebras.
We show that any tight teleportation scheme for $N$ necessarily arises from an orthonormal unitary Pimsner-Popa basis of $M_n(mathbbC)$ over $N'$.
arXiv Detail & Related papers (2022-08-02T00:20:46Z) - Christensen-Evans theorem and extensions of GNS-symmetric quantum Markov
semigroups [0.0]
We show the existence of GNS-symmetric extensions of GNS-symmetric quantum Markov semigroups.
This implies that the generators of GNS-symmetric quantum Markov semigroups on finite-dimensional von Neumann algebra can be written in the form specified by Alicki's theorem.
arXiv Detail & Related papers (2022-03-01T10:34:24Z) - Conformal field theory from lattice fermions [77.34726150561087]
We provide a rigorous lattice approximation of conformal field theories given in terms of lattice fermions in 1+1-dimensions.
We show how these results lead to explicit error estimates pertaining to the quantum simulation of conformal field theories.
arXiv Detail & Related papers (2021-07-29T08:54:07Z) - On perturbations of dynamical semigroups defined by covariant completely
positive measures on the semi-axis [0.0]
Construction is based upon unbounded linear perturbations of generators of the preadjoint semigroups on the space of nuclear operators.
As an application we construct a perturbation of the semigroup of non-unital *-endomorphisms on the algebra of canonical anticommutation relations resulting in the flow of shifts.
arXiv Detail & Related papers (2021-01-05T17:11:35Z) - Lagrangian description of Heisenberg and Landau-von Neumann equations of
motion [55.41644538483948]
An explicit Lagrangian description is given for the Heisenberg equation on the algebra of operators of a quantum system, and for the Landau-von Neumann equation on the manifold of quantum states which are isospectral with respect to a fixed reference quantum state.
arXiv Detail & Related papers (2020-05-04T22:46:37Z) - Joint measurability meets Birkhoff-von Neumann's theorem [77.34726150561087]
We prove that joint measurability arises as a mathematical feature of DNTs in this context, needed to establish a characterisation similar to Birkhoff-von Neumann's.
We also show that DNTs emerge naturally from a particular instance of a joint measurability problem, remarking its relevance in general operator theory.
arXiv Detail & Related papers (2018-09-19T18:57:45Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.