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We present a detailed derivation and numerical tests of a new mixed quantum-classical scheme to deal with non-adiabatic processes. The method is presented as the zero-th order approximation to the exact coupled dynamics of electrons and…

化学物理 · 物理学 2015-06-22 Federica Agostini , Ali Abedi , E. K. U. Gross

Quantum mechanically, a driving process is expected to be reversible in the quasistatic limit, also known as the adiabatic theorem. This statement stands in opposition to classical mechanics, where a mix of regular and chaotic dynamics…

量子物理 · 物理学 2023-05-09 Yehoshua Winsten , Doron Cohen

Adiabatic evolution is an emergent design principle for time modulated metamaterials, often inspired by insights from topological quantum computing such as braiding operations. However, the pursuit of classical adiabatic metamaterials is…

介观与纳米尺度物理 · 物理学 2024-08-09 Cyrill Bösch , Andreas Fichtner , Marc Serra Garcia

We generalize the adiabatic approximation to the case of open quantum systems, in the joint limit of slow change and weak open system disturbances. We show that the approximation is ``physically reasonable'' as under wide conditions it…

量子物理 · 物理学 2016-08-16 Patrik Thunström , Johan Åberg , Erik Sjöqvist

We analyze the properties of the quasi-one-dimensional triangle lattice emphasizing the occurrence of flat bands and band touching via the tuning of the lattice hopping parameters and on-site energies. The spectral properties of the…

介观与纳米尺度物理 · 物理学 2013-01-22 M. Schulze , D. Bercioux , D. F. Urban

Two approaches are outlined to characterize the fluctuation behavior of work applied to a system by a slow change of a parameter. One approach uses the adiabatic theorems of quantum and classical mechanics, the other one is based on the…

统计力学 · 物理学 2022-01-11 Juyeon Yi , Peter Talkner

We show that the quasi-adiabatic evolution of a system governed by the Dicke Hamiltonian can be described in terms of a self-induced quantum many-body metrological protocol. This effect relies on the sensitivity of the ground state to a…

量子物理 · 物理学 2015-06-16 P. A. Ivanov , D. Porras

The evolution of a driven quantum system is said to be adiabatic whenever the state of the system stays close to an instantaneous eigenstate of its time-dependent Hamiltonian. The celebrated quantum adiabatic theorem ensures that such pure…

量子物理 · 物理学 2021-10-04 Nikolai Il`in , Anastasia Aristova , Oleg Lychkovskiy

Peridynamics is a nonlocal continuum-mechanical theory based on minimal regularity on the deformations. Its key trait is that of replacing local constitutive relations featuring spacial differential operators with integrals over differences…

偏微分方程分析 · 数学 2018-05-23 Martin Kružík , Carlos Mora-Corral , Ulisse Stefanelli

M. Kruskal showed that each nearly-periodic dynamical system admits a formal $U(1)$ symmetry, generated by the so-called roto-rate. We prove that such systems also admit nearly-invariant manifolds of each order, near which rapid…

动力系统 · 数学 2021-09-29 J. W. Burby , E. Hirvijoki

We work out the theory and applications of a fast quasi-adiabatic approach to speed up slow adiabatic manipulations of quantum systems by driving a control parameter as near to the adiabatic limit as possible over the entire protocol…

量子物理 · 物理学 2015-10-14 S. Martínez-Garaot , A. Ruschhaupt , J. Gillet , Th. Busch , J. G. Muga

We critically revisit the evidence for the existence of quasistationary states in the globally coupled XY (or Hamiltonian mean-field) model. A slow-relaxation regime at long times is clearly revealed by numerical realizations of the model,…

统计力学 · 物理学 2009-11-07 Damian H. Zanette , Marcelo A. Montemurro

Starting from a simple mapping of a generator of local stochastic dynamics to a quantum Hamiltonian, we derive a condition, which allows us to use the quasi-adiabatic evolution and so relate gapped quantum phases with non-equilibrium's.…

量子物理 · 物理学 2015-12-10 Benoît Descamps , Frank Verstraete

We study the quantum dynamics of a two-level system driven by a pulse that starts near-resonant for small amplitudes, yielding nonadiabatic evolution, and induces an adiabatic evolution for larger amplitudes. This problem is analyzed in…

量子物理 · 物理学 2009-11-10 L. P. Yatsenko , S. Guerin , H. R. Jauslin

Quantum adiabatic evolutions find a broad range of applications in quantum physics and quantum technologies. The traditional form of the quantum adiabatic theorem limits the speed of adiabatic evolution by the minimum energy gaps of the…

We use an adiabatic approximation in terms of instantaneous resonances to study the steady-state and time-dependent transport properties of interacting electrons in biased resonant tunneling heterostructures. This approach leads, in a…

凝聚态物理 · 物理学 2009-10-28 Carlo Presilla , Johannes Sjöstrand

We first discuss the geometrical construction and the main mathematical features of the maximum-entropy-production/steepest-entropy-ascent nonlinear evolution equation proposed long ago by this author in the framework of a fully quantum…

量子物理 · 物理学 2015-05-13 Gian Paolo Beretta

The operation of near-term quantum technologies requires the development of feasible, implementable, and robust strategies of controlling complex many body systems. To this end, a variety of techniques, so-called "shortcuts to adiabaticty",…

量子物理 · 物理学 2022-10-21 Artur Soriani , Eduardo Miranda , Sebastian Deffner , Marcus V. S. Bonança

Starting from an ideal crystalline state, we numerically study a nonequilibrium dynamical order- disorder transition promoted by the application of a periodic shearing protocol at low temperatures in model systems in two and three…

软凝聚态物质 · 物理学 2021-08-10 Eric Brillaux , Francesco Turci

We show a method to accelerate quantum adiabatic dynamics of wavefunctions under electro-magnetic field by developing the previous theory (Masuda & Nakamura 2008 and 2010). Firstly we investigate the orbital dynamics of a charged particle.…

介观与纳米尺度物理 · 物理学 2010-04-26 Shumpei Masuda , Katsuhiro Nakamura