Results 21 to 30 of about 49,580 (287)

Dissipative Frustration in a One Dimensional Josephson Junction Chain

open access: yesProceedings, 2019
We study the influence of dissipative frustration on the one dimensional Josephson junction chain. In particular we analyze the dissipative quantum phase transition between the chain being superconducting or insulating, the purity as a measure of quantum&
Dominik Maile   +3 more
doaj   +1 more source

The Sobolev-type equations of the second order with the relatively dissipative operator pencils

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
Of concern is the Cauchy problem for the Sobolev-type equation of the second order. We introduce the definition of relatively dissipative operator pencils, generalize the notion of dissipativity and relative dissipativity of operators. The connection with
Alyona A Zamyshlyaeva   +1 more
doaj   +3 more sources

Dissipative Deep Neural Dynamical Systems

open access: yesIEEE Open Journal of Control Systems, 2022
In this paper, we provide sufficient conditions for dissipativity and local asymptotic stability of discrete-time dynamical systems parametrized by deep neural networks.
Jan Drgona   +3 more
doaj   +1 more source

Trace formulae for dissipative and coupled scattering systems [PDF]

open access: yes, 2007
For scattering systems consisting of a (family of) maximal dissipative extension(s) and a selfadjoint extension of a symmetric operator with finite deficiency indices, the spectral shift function is expressed in terms of an abstract Titchmarsh-Weyl ...
Behrndt, Jussi   +2 more
core   +3 more sources

Dissipative operators and series inequalities [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1981
Of concern is the best constant K in the inequality ‖Ax‖2 ≤ K‖A2x‖‖x‖ where A generates a strongly continuous contraction semigroup in a Hilbert space. Criteria are obtained for approximate extremal vectors x when K = 2 (K ≤ 2 always holds). By specializing A + I to be a shift operator on a sequence space, very simple proofs of Copson's recent results ...
Gindler, Herbert A.   +1 more
openaire   +1 more source

Hyperbolic ring based formulation for thermo field dynamics, quantum dissipation, entanglement, and holography

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
The classical and quantum formulations for open systems related to dissipative dynamics are constructed on a complex hyperbolic ring, following universal symmetry principles, and considering the double thermal fields approach for modeling the system of ...
R. Cartas-Fuentevilla   +2 more
doaj   +1 more source

Non-markovian mesoscopic dissipative dynamics of open quantum spin chains

open access: yes, 2016
We study the dissipative dynamics of $N$ quantum spins with Lindblad generator consisting of operators scaling as fluctuations, namely with the inverse square-root of $N$.
Benatti, Fabio   +3 more
core   +1 more source

Functions of perturbed dissipative operators [PDF]

open access: yesSt. Petersburg Mathematical Journal, 2012
We generalize our results of \cite{AP2} and \cite{AP3} to the case of maximal dissipative operators. We obtain sharp conditions on a function analytic in the upper half-plane to be operator Lipschitz.
Aleksandrov, A. B., Peller, V. V.
openaire   +3 more sources

The Limit Behavior Of The Trajectories of Dissipative Quadratic Stochastic Operators on Finite Dimensional Simplex

open access: yes, 2011
The limit behavior of trajectories of dissipative quadratic stochastic operators on a finite-dimensional simplex is fully studied. It is shown that any dissipative quadratic stochastic operator has either unique or infinitely many fixed points.
Bernstein S. N.   +2 more
core   +1 more source

Real-Time Evolution of Strongly Coupled Fermions driven by Dissipation

open access: yes, 2016
We consider the real-time evolution of a strongly coupled system of lattice fermions whose dynamics is driven entirely by dissipative Lindblad processes, with linear or quadratic quantum jump operators.
Banerjee, Debasish   +3 more
core   +1 more source

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