Concept

Zero-point energy

Related publications (268)

Universal helimagnon and skyrmion excitations in metallic, semiconducting and insulating chiral magnets

Nearly seven decades of research on microwave excitations of magnetic materials have led to a wide range of applications in electronics(1-4). The recent discovery of topological spin solitons in chiral magnets, so-called skyrmions(5-9), promises high-frequ ...

Nature Publishing Group2015

Local Control Theory in Trajectory Surface Hopping Dynamics Applied to the Excited-State Proton Transfer of 4-Hydroxyacridine

Ursula Röthlisberger, Ivano Tavernelli, Basile Curchod, Thomas James Penfold

The application of local control theory combined with nonadiabatic ab initio molecular dynamics to study the photoinduced intramolecular proton transfer reaction in 4-hydroxyacridine was investigated. All calculations were performed within the framework of ...

2015

Dynamical structure factors and excitation modes of the bilayer Heisenberg model

Frédéric Mila, Tommaso Coletta

Using quantum Monte Carlo simulations along with higher-order spin-wave theory, bond-operator and strong-coupling expansions, we analyze the dynamical spin structure factor of the spin-half Heisenberg model on the square-lattice bilayer. We identify distin ...

2015

Higgs inflation and vacuum stability

Javier Rubio

Inflation is nowadays a well-established paradigm consistent with all the observations. The precise nature of the inflaton is however unknown and its role could be played by any candidate able to imitate a scalar condensate in the slow-roll regime. The dis ...

Iop Publishing Ltd2015

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Henrik Moodysson Rønnow

The magnetic critical scattering in Sr2IrO4 has been characterized using x-ray resonant magnetic scattering (XRMS) both below and above the three-dimensional antiferromagnetic ordering temperature T-N. The order parameter critical exponent below TN is foun ...

2015

Evaluation of experimentally measured non-stationary oscillations in gyrotrons using adequate simulation methods

Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, Jérémy Genoud, Falk Hans Braunmüller, Trach-Minh Tran

In order to properly simulate cases in which gyrotrons exhibit fast temporally varying oscillations, such as non-stationary oscillations or possible dynamic After-Cavity Interaction (ACI), an adequate model for the beam-wave interaction has to be used. We ...

2015

Energy/Reliability Trade-Offs in Low-Voltage ReRAM-Based Non-Volatile Flip-Flop Design

Giovanni De Micheli, Andreas Peter Burg, Davide Sacchetto, Yusuf Leblebici, Pierre-Emmanuel Julien Marc Gaillardon, Pascal Andreas Meinerzhagen

The total power budget of Ultra-Low Power (ULP) VLSI Systems-on-Chip (SoCs) is often dominated by the leakage power of embedded memories as well as status registers. On the one hand, supply voltage scaling down to the near-threshold (near-VT

Institute of Electrical and Electronics Engineers2014

Semiclassical evidence of columnar order in the fully frustrated transverse-field Ising model on the square lattice

Frédéric Mila, Tommaso Coletta

We investigate the zero-temperature phase diagram of the fully frustrated transverse-field Ising model on the square lattice both in the classical limit and in the presence of quantum fluctuations. At the classical level (the limit of infinite spin S), we ...

2014

Experimental parametric study of energy dissipater design in natural rivers

Nicolas Andreini

Water retention in river plains is a common measure for flood routing. Discharge control is easily achieved by structures combining openings and weirs. Energy dissipation at the outlet is required to ensure the transition from supercritical to subcritical ...

Crc Press-Taylor & Francis Group2014

Overview of the European project STRUCTURES

Nicolas Mora Parra

An overview of the European project STRUCTURES and its main challenges is given. Current and foreseen Intentional Electromagnetic Interference (IEMI) threats are classified according to their availability, their technical characteristics (such as bandwidth ...

2014

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