Results 51 to 60 of about 67,904 (284)

On the stability of the infinite Projected Entangled Pair Operator ansatz for driven-dissipative 2D lattices

SciPost Physics Core, 2021
We present calculations of the time-evolution of the driven-dissipative XYZ model using the infinite Projected Entangled Pair Operator (iPEPO) method, introduced by [A. Kshetrimayum, H. Weimer and R. Orús, Nat. Commun. 8, 1291 (2017)].
Dainius Kilda, Alberto Biella, Marco Schiro, Rosario Fazio, Jonathan Keeling
doaj   +1 more source

Semiclassical Evolution of Dissipative Markovian Systems

, 2008
A semiclassical approximation for an evolving density operator, driven by a "closed" hamiltonian operator and "open" markovian Lindblad operators, is obtained. The theory is based on the chord function, i.e.
A M Ozorio de Almeida, Abraham R, Arnold V I, Diosi L, Englert B-G, Giulini D, Guillemin V, Gutzwiller M, Husimi K, Littlejohn R G, Maslov V P, O Brodier, Osborn T A, Ozorio de Almeida A M, Ozorio de Almeida A M, Ozorio de Almeida A M, P de M Rios, Percival I, Rios P de M, Rios P de M, Sandulescu A, Schleich P W, Schulman L S, Strunz W T, Whitney R, Zambrano E   +25 more
core   +1 more source

Some Results about Dissipativity of Kolmogorov Operators [PDF]

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

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

Spectral analysis of singular Hamiltonian systems with an eigenparameter in the boundary condition

Electronic Journal of Differential Equations, 2019
In this article we study a non-self-adjoint eigenparameter dependent singular differential 1D Hamiltonian system with the singular end points a and b in the Hilbert space $L_P^2((a,b);\mathbb{C}^2)$ and we consider that this 1D Hamiltonian system is ...
Bilender P. Allahverdiev
doaj  

Operator dynamics in Lindbladian SYK: a Krylov complexity perspective

Journal of High Energy Physics
We use Krylov complexity to study operator growth in the q-body dissipative Sachdev-Ye-Kitaev (SYK) model, where the dissipation is modeled by linear and random p-body Lindblad operators.
Budhaditya Bhattacharjee, Pratik Nandy, Tanay Pathak   +2 more
doaj   +1 more source

Third quantization of open quantum systems: Dissipative symmetries and connections to phase-space and Keldysh field-theory formulations

Physical Review Research, 2023
The connections between standard theoretical tools used to study open quantum systems can sometimes seem opaque. Whether it is a Lindblad master equation, the equation of motion for the Wigner function, or a dissipative Keldysh action, features evident ...
Alexander McDonald, Aashish A. Clerk
doaj   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Evolution governed by “generalized“ dissipative operators

Proceedings of the Japan Academy, Series A, Mathematical Sciences, 1992
The authors consider the Cauchy problem (P) \(u'(t)\in Au(t)+f(t)\), \(t\in[0,T]\); \(u(0)=x\) is a Banach space \((X,|\cdot|)\) under the assumption that \(f\in L^ 1(0,T;X)\) and the multivalued operator \(A: D(A)\subset X\to X\) satisfy the condition: there exists \(\omega: \mathbb{R}_ +\to\mathbb{R}\) such that \(\omega(0)=0\) and problem \(r'(t ...
Kobayashi, Yoshikazu, Tanaka, Naoki
openaire   +3 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source