نتایج جستجو برای: قضیه floquet
تعداد نتایج: 5269 فیلتر نتایج به سال:
In this paper we study the spectral properties of families of quasiperiodic Schrödinger operators on the real line in the adiabatic limit in the case when the adiabatic iso-energetic curves are extended along the position direction. We prove that, in energy intervals where this is the case, most of the spectrum is purely absolutely continuous in the adiabatic limit, and that the associated gene...
Periodic driving of a quantum system can enable new topological phases with no analog in static systems. In this paper, we systematically classify one-dimensional topological and symmetry-protected topological (SPT) phases in interacting fermionic and bosonic quantum systems subject to periodic driving, which we dub Floquet SPTs (FSPTs). For physical realizations of interacting FSPTs, many-body...
Graphene subject to a spatially uniform, circularly polarized electric field supports a Floquet spectrum with properties akin to those of a topological insulator. The transport properties of this system, however, are complicated by the nonequilibrium occupations of the Floquet states. We address this by considering transport in a two-terminal ribbon geometry for which the leads have well-define...
The paper presents an approximated and compact derivation of the mutual displacement of Floquet eigenvectors in a class of LC tank oscillators with time varying bias. In particular it refers to parallel tank oscillators of which the energy restoring can be modeled through a train of current pulses. Since Floquet eigenvectors are acknowledged to give a correct decomposition of noise perturbation...
We develop the Landau-Zener transfer matrix theory for instantaneous Floquet states (IFSs) quantum systems driven by strong pulse lasers. Applying this to excitation probability in two-level systems, we show unexpectedly good quantitative agreements few-cycle pulses. This approach enables us qualitatively understand probability's peculiar behaviors as path interference between IFSs. also study ...
از مباحث چالشبرانگیز در دانش منطق، قضیه سالبةالمحمول است. منطقدانان در پذیرش این قضیه به دو گروه تقسیم شدهاند و گروهی که وجود آن را پذیرفتهاند نیز درباره مفادش همنظر نیستند. گویا خونجی نخستین منطقدانی است که از این قضیه یاد کرده و البته بدون توجه به چالشهای احتمالی درباره سالبةالمحمول، وجود آن را مسلّم انگاشته و احکام آن را، مانند دیگر قضایا، تفصیل داده است. پس از خونجی، ابهری سالبةالم...
Topological insulators are fascinating states of matter exhibiting protected edge states and robust quantized features in their bulk. Here we propose and validate experimentally a method to detect topological properties in the bulk of one-dimensional chiral systems. We first introduce the mean chiral displacement, an observable that rapidly approaches a value proportional to the Zak phase durin...
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