Results 11 to 20 of about 67,595 (279)

Generators with a closure relation [PDF]

open access: yes, 2013
Assume that a block operator of the form $\left(\begin{smallmatrix}A_{1}\\A_{2}\quad 0\end{smallmatrix}\right)$, acting on the Banach space $X_{1}\times X_{2}$, generates a contraction $C_{0}$-semigroup. We show that the operator $A_{S}$ defined by $A_{S}
Schwenninger, Felix, Zwart, Hans
core   +3 more sources

A correlation between two pairs of linear relations and dissipative extensions of some nondensely defined symmetric operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
A general form of a maximal dissipative subspace extension (in particularly of an operator extension) of a finite-dimensional nondensely defined restriction of a symmetric operator with arbitrary defect numbers is established.
O. G. Storozh
doaj   +1 more source

Theory of quantum fluctuations of optical dissipative structures and its application to the squeezing properties of bright cavity solitons [PDF]

open access: yes, 2007
We present a method for the study of quantum fluctuations of dissipative structures forming in nonlinear optical cavities, which we illustrate in the case of a degenerate, type I optical parametric oscillator.
A. Mecozzi   +11 more
core   +2 more sources

Dissipative flow equations

open access: yesSciPost Physics, 2020
We generalize the theory of flow equations to open quantum systems focusing on Lindblad master equations. We introduce and discuss three different generators of the flow that transform a linear non-Hermitian operator into a diagonal one. We first test
Lorenzo Rosso, Fernando Iemini, Marco Schirò, Leonardo Mazza
doaj   +1 more source

Exact density matrix elements for a driven dissipative system described by a quadratic Hamiltonian

open access: yesScientific Reports, 2021
For a prototype quadratic Hamiltonian describing a driven, dissipative system, exact matrix elements of the reduced density matrix are obtained from a generating function in terms of the normal characteristic functions.
Sh. Saedi, F. Kheirandish
doaj   +1 more source

Functional Model of Dissipative Fourth Order Differential Operators

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
In this paper, maximal dissipative fourth order operators with equal deficiency indices are investigated. We construct a self adjoint dilation of such operators.
Tuna Hüseyin
doaj   +1 more source

Some Results about Dissipativity of Kolmogorov Operators [PDF]

open access: yesCzechoslovak Mathematical Journal, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
G. Da Prato, Tubaro, Luciano
openaire   +3 more sources

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

Operator growth and Krylov construction in dissipative open quantum systems

open access: yesJournal of High Energy Physics, 2022
Inspired by the universal operator growth hypothesis, we extend the formalism of Krylov construction in dissipative open quantum systems connected to a Markovian bath.
Aranya Bhattacharya   +3 more
doaj   +1 more source

Dynamical Invariant and Exact Mechanical Analyses for the Caldirola–Kanai Model of Dissipative Three Coupled Oscillators

open access: yesEntropy, 2021
We study the dynamical invariant for dissipative three coupled oscillators mainly from the quantum mechanical point of view. It is known that there are many advantages of the invariant quantity in elucidating mechanical properties of the system.
Salim Medjber   +2 more
doaj   +1 more source

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