Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Gohm, Rolf"'
Publikováno v:
Communications in Mathematical Physics, 352(1) (2017), 59-94
We introduce a notion of universal preparability for a state of a system, more precisely: for a normal state on a von Neumann algebra. It describes a situation where from an arbitrary initial state it is possible to prepare a target state with arbitr
Externí odkaz:
http://arxiv.org/abs/1605.00315
To a semi-cosimplicial object (SCO) in a category we associate a system of partial shifts on the inductive limit. We show how to produce an SCO from an action of the infinite braid monoid $\mathbb{B}^+_\infty$ and provide examples. In categories of (
Externí odkaz:
http://arxiv.org/abs/1508.03168
Autor:
Gohm, Rolf.
Univ., Habil.-Schr. u.d.T.: Gohm, Rolf: Elements of a spatial theory for noncommutative stationary processes with discrete time index--Greifswald, 2002.
Literaturverz. S. [165] - 168.
Literaturverz. S. [165] - 168.
Externí odkaz:
http://www.loc.gov/catdir/enhancements/fy0813/2004103932-d.html
http://www.loc.gov/catdir/enhancements/fy0813/2004103932-t.html
http://www.loc.gov/catdir/enhancements/fy0813/2004103932-t.html
Using the Trotter-Kato theorem we prove the convergence of the unitary dynamics generated by an increasingly singular Hamiltonian in the case of a single field coupling. The limit dynamics is a quantum stochastic evolution of Hudson-Parthasarathy typ
Externí odkaz:
http://arxiv.org/abs/1409.2260
Based on a careful analysis of functional models for contractive multi-analytic operators we establish a one-to-one correspondence between unitary equivalence classes of minimal contractive liftings of a row contraction and injective symbols of contr
Externí odkaz:
http://arxiv.org/abs/1402.4220
Autor:
Gohm, Rolf
A noncommutative Fornasini-Marchesini system (a multi-variable version of a linear system) can be realized within a weak Markov process (a model for quantum evolution). For a discrete time parameter the resulting structure is worked out systematicall
Externí odkaz:
http://arxiv.org/abs/1206.0378
Autor:
Gohm, Rolf
To a pair of subspaces wandering with respect to a row isometry we associate a transfer function which in general is multi-Toeplitz and in interesting special cases is multi-analytic. Then we describe in an expository way how characteristic functions
Externí odkaz:
http://arxiv.org/abs/1102.5519
Autor:
Gohm, Rolf, Köstler, Claus
This is an introductory paper about our recent merge of a noncommutative de Finetti type result with representations of the infinite braid and symmetric group which allows to derive factorization properties from symmetries. We explain some of the mai
Externí odkaz:
http://arxiv.org/abs/1102.0813
Autor:
Gohm, Rolf, Köstler, Claus
We provide an operator algebraic proof of a classical theorem of Thoma which characterizes the extremal characters of the infinite symmetric group $\mathbb{S}_\infty$. Our methods are based on noncommutative conditional independence emerging from exc
Externí odkaz:
http://arxiv.org/abs/1005.5726