Zero-point energy ≈ Zero-point energy
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Anomalous Edge State in a Non-Hermitian Lattice Open
We show that the bulk-boundary correspondence for topological insulators can be modified in the presence of non-Hermiticity. We consider a one-dimensional tight-binding model with gain and loss as well as long-range hopping. The system is …
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Ground‐State Chemical Reactivity under Vibrational Coupling to the Vacuum Electromagnetic Field Open
The ground‐state deprotection of a simple alkynylsilane is studied under vibrational strong coupling to the zero‐point fluctuations, or vacuum electromagnetic field, of a resonant IR microfluidic cavity. The reaction rate decreased by a fa…
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Andreev bound states versus Majorana bound states in quantum dot-nanowire-superconductor hybrid structures: Trivial versus topological zero-bias conductance peaks Open
Motivated by an important recent experiment [Deng et al., Science 354, 1557\n(2016)], we theoretically consider the interplay between Andreev bound\nstates(ABSs) and Majorana bound states(MBSs) in quantum dot-nanowire\nsemiconductor system…
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Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor Open
Reaching a conductance plateau The surface of the iron-based superconductor FeTe 0.55 Se 0.45 satisfies the necessary conditions to support topological superconductivity. Under the application of a magnetic field, vortices with zero-bias p…
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Ground‐State Chemical Reactivity under Vibrational Coupling to the Vacuum Electromagnetic Field Open
The ground‐state deprotection of a simple alkynylsilane is studied under vibrational strong coupling to the zero‐point fluctuations, or vacuum electromagnetic field, of a resonant IR microfluidic cavity. The reaction rate decreased by a fa…
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Quantum amplification of mechanical oscillator motion Open
Improving precision with quantum amplification Quantum mechanically, an object can be described by a pair of noncommuting observables, typically by its position and momentum. The precision to which these observables can be measured is limi…
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Mechanical Weyl Modes in Topological Maxwell Lattices Open
We show that two-dimensional mechanical lattices can generically display topologically protected bulk zero-energy phonon modes at isolated points in the Brillouin zone, analogs of massless fermion modes of Weyl semimetals. We focus on defo…
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Simultaneous calibration of spectro-photometric distances and the Gaia DR2 parallax zero-point offset with deep learning Open
Gaia measures the five astrometric parameters for stars in the Milky Way, but only four of them (positions and proper motion, but not distance) are well measured beyond a few kpc from the Sun. Modern spectroscopic surveys such as APOGEE co…
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Ubiquitous Non-Majorana Zero-Bias Conductance Peaks in Nanowire Devices Open
We perform tunneling measurements on indium antimonide nanowire-superconductor hybrid devices fabricated for the studies of Majorana bound states. At finite magnetic field, resonances that strongly resemble Majorana bound states, including…
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Motional Sideband Asymmetry of a Nanoparticle Optically Levitated in Free Space Open
The hallmark of quantum physics is Planck's constant h, whose finite value entails the quantization that gave the theory its name. The finite value of h gives rise to inevitable zero-point fluctuations even at vanishing temperature. The ze…
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Topological photonic crystals with zero Berry curvature Open
Topological photonic crystals are designed based on the concept of Zak's phase rather than the topological invariants such as the Chern number and spin Chern number, which rely on the existence of a nonvanishing Berry curvature. Our photon…
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Supercurrent Detection of Topologically Trivial Zero-Energy States in Nanowire Junctions Open
We report the emergence of zero-energy states in the trivial phase of a short nanowire junction with a strong spin-orbit coupling and magnetic field, formed by strong coupling between the nanowire and two superconductors. The zero-energy s…
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Dirty Weyl semimetals: Stability, phase transition, and quantum criticality Open
We study the stability of three-dimensional incompressible Weyl semimetals in\nthe presence of random quenched charge impurities. Combining numerical analysis\nand scaling theory we show that in the presence of sufficiently weak randomness…
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Determination of Point of Zero Charge (PZC) of Concrete Particles Adsorbents Open
In the present study, the pH point of zero charge (pHpzc) was determined for concrete particles adsorbent. The Mass Titration (MT) Method was adopted, and the adsorbent was used to remove the fluoride from water. The pH of point zero charg…
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The pH dependent surface charging and points of zero charge. IX. Update Open
Summary of the points of zero charge (PZC) and isoelectric points (IEP) of various materials published in the recent literature and of older results overlooked in the previous compilations. The roles of experimental conditions, especially …
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A World of Three Zeros (The New Economics of Zero Poverty, Zero Unemployment and Zero Net Carbon Emissions) Open
No Abstract.
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Effect of Disorder in a Three-Dimensional Layered Chern Insulator Open
We studied the effects of disorder in a three-dimensional layered Chern insulator, which, in the clean limit, is either a Chern insulator or a Weyl semimetal depending on an interlayer coupling strength. By calculating the localization len…
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Floquet Majorana fermions and parafermions in driven Rashba nanowires Open
We study a periodically driven nanowire with Rashba-like conduction and\nvalence bands in the presence of a magnetic field. We identify topological\nregimes in which the system hosts zero-energy Majorana fermions. We further\ninvestigate t…
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Experimentally accessible topological quality factor for wires with zero energy modes Open
Spin-orbit coupled semiconducting nanowires with proximity-induced\nsuperconductivity are expected to host Majorana zero modes at their endpoints\nwhen a sufficiently strong magnetic field is applied. The resulting phase would\nbe a one-di…
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Topological and holonomic quantum computation based on second-order topological superconductors Open
Majorana fermions feature non-Abelian exchange statistics and promise\nfascinating applications in topological quantum computation. Recently,\nsecond-order topological superconductors (SOTSs) have been proposed to host\nMajorana fermions a…
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Quench dynamics and zero-energy modes: The case of the Creutz model Open
In most lattice models, the closing of a band gap typically occurs at high-symmetry points in the Brillouin zone. Differently, in the Creutz model $-$ describing a system of spinless fermions hopping on a two-leg ladder pierced by a magnet…
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Laser Cooling of a Nanomechanical Oscillator to Its Zero-Point Energy Open
Optomechanical systems in the well-resolved-sideband regime are ideal for studying a myriad of quantum phenomena with mechanical systems, including backaction-evading measurements, mechanical squeezing, and nonclassical states generation. …
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Majorana edge modes with gain and loss Open
We consider a non-Hermitian generalization of the Kitaev model and study the\nexistence of stable Majorana zero energy modes. We show that they exist in the\nlimit of zero chemical potential even if balanced gain and loss are randomly\ndis…
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Zero-energy pinning of topologically trivial bound states in multiband semiconductor-superconductor nanowires Open
Recent tunneling conductance measurements on semiconductor-superconductor\nnanowires find zero-bias peaks to be ubiquitous across wide ranges of chemical\npotential and Zeeman energy. Motivated by this, we demonstrate that\ntopologically-t…
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Zero-Order Second Harmonic Generation from AlGaAs-on-Insulator Metasurfaces Open
All-dielectric metasurfaces consist of two-dimensional arrangements of nanoresonators and are of paramount importance for shaping polarization, phase, and amplitude of both fundamental and harmonic optical waves. To date, their reported no…
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Three-Dimensional Acoustic Double-Zero-Index Medium with a Fourfold Degenerate Dirac-like Point Open
We report the first realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM) made of a cubic lattice of metal rods. While the past decade has seen several realizations of 2D DZIM, achieving such a medium in 3D has r…
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Observation of Degenerate Zero-Energy Topological States at Disclinations in an Acoustic Lattice Open
Building upon the bulk-boundary correspondence in topological phases of matter, disclinations have recently been harnessed to trap fractionally quantized density of states (DOS) in classical wave systems. While these fractional DOS have as…
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Many-body spectral reflection symmetry and protected infinite-temperature degeneracy Open
Protected zero modes in quantum physics traditionally arise in the context of\nground states of many-body Hamiltonians. Here we study the case where zero\nmodes exist in the center of a reflection-symmetric many-body spectrum, giving\nrise…
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Trajectory-adjusted electronic zero point energy in classical Meyer-Miller vibronic dynamics: Symmetrical quasiclassical application to photodissociation Open
An electronic zero-point energy (ZPE) adjustment protocol is presented within the context of the symmetrical quasiclassical (SQC) quantization of the electronic oscillator degrees of freedom (DOF) in classical Meyer-Miller (MM) vibronic dy…
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Zero-energy pinning from interactions in Majorana nanowires Open
Majorana zero modes at the boundaries of topological superconductors are charge-neutral, an equal superposition of electrons and holes. This ideal situation is, however, hard to achieve in physical implementations, such as proximitized sem…