Results 11 to 20 of about 182 (33)

Stationary Quantum Markov processes as solutions of stochastic differential equations

open access: yes, 1998
From the operator algebraic approach to stationary (quantum) Markov processes there has emerged an axiomatic definition of quantum white noise. The role of Brownian motion is played by an additive cocycle with respect to its time evolution.
Jürgen Hellmich   +2 more
semanticscholar   +1 more source

Quantum stochastic convolution cocycles III [PDF]

open access: yes, 2011
Every Markov-regular quantum Levy process on a multiplier C*-bialgebra is shown to be equivalent to one governed by a quantum stochastic differential equation, and the generating functionals of norm-continuous convolution semigroups on a multiplier C ...
Lindsay, J. Martin, Skalski, Adam G.
core   +2 more sources

Monotone independence, comb graphs and Bose-Einstein condensation [PDF]

open access: yes, 2004
The adjacency matrix of a comb graph is decomposed into a sum of monotone independent random variables with respect to the vacuum state. The vacuum spectral distribution is shown to be asymptotically the arcsine law as a consequence of the monotone ...
Accardi, L., Ben Ghorbal, A., Obata, N.
core   +1 more source

The Quantum Black-Scholes Equation [PDF]

open access: yes, 2006
Motivated by the work of Segal and Segal on the Black-Scholes pricing formula in the quantum context, we study a quantum extension of the Black-Scholes equation within the context of Hudson-Parthasarathy quantum stochastic calculus.
Accardi, Luigi, Boukas, Andreas
core   +1 more source

Approximation of quantum Levy processes by quantum random walks [PDF]

open access: yes, 2007
Every quantum Levy process with a bounded stochastic generator is shown to arise as a strong limit of a family of suitably scaled quantum random walks.Comment: 7 ...
Franz, Uwe, Skalski, Adam
core   +1 more source

Classical dilations \`a la Hudson-Parthasarathy of Markov semigroups

open access: yes, 2007
We study the Classical Probability analogue of the dilations of a quantum dynamical semigroup defined in Quantum Probability via quantum stochastic differential equations.
Gregoratti, M.
core   +2 more sources

Analysis of unbounded operators and random motion

open access: yes, 2009
We study infinite weighted graphs with view to \textquotedblleft limits at infinity,\textquotedblright or boundaries at infinity. Examples of such weighted graphs arise in infinite (in practice, that means \textquotedblleft very\textquotedblright large ...
Dunford N.   +6 more
core   +1 more source

Unbounded operators, Lie algebras, and local representations

open access: yes, 2014
We prove a number of results on integrability and extendability of Lie algebras of unbounded skew-symmetric operators with common dense domain in Hilbert space.
Jorgensen, Palle, Tian, Feng
core   +1 more source

Quantum Feynman-Kac perturbations

open access: yes, 2013
We develop fully noncommutative Feynman-Kac formulae by employing quantum stochastic processes. To this end we establish some theory for perturbing quantum stochastic flows on von Neumann algebras by multiplier cocycles.
Belton, Alexander C. R.   +2 more
core   +1 more source

Universal Malliavin calculus in Fock and Levy-Ito spaces [PDF]

open access: yes, 2008
We review and extend Lindsay's work on abstract gradient and divergence operators in Fock space over a general complex Hilbert space. Precise expressions for the domains are given, the L2-equivalence of norms is proved and an abstract version of the It^o-
Applebaum, D.
core   +1 more source

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