Results 21 to 30 of about 476,899 (295)

Spin-oscillator model for DNA/RNA unzipping by mechanical force [PDF]

open access: yes, 2012
We model unzipping of DNA/RNA molecules subject to an external force by a spin-oscillator system. The system comprises a macroscopic degree of freedom, represented by a one-dimensional oscillator, and internal degrees of freedom, represented by Glauber ...
Bonilla, L. L., Carpio, A., Prados, A.
core   +2 more sources

Statics and dynamics of a harmonic oscillator coupled to a one-dimensional Ising system

open access: yes, 2011
We investigate an oscillator linearly coupled with a one-dimensional Ising system. The coupling gives rise to drastic changes both in the oscillator statics and dynamics.
Bonilla, L. L., Carpio, A., Prados, A.
core   +1 more source

The Application of the Theory of Synthesis of a Delay Line with a Surface Acoustic Wave for a Single-Mode Oscillator of Electric Signals in Some Sensors of Non-Electrical Quantities

open access: yesMetrology and Measurement Systems, 2017
The paper deals with the issue of constructing delay lines on the basis of surface acoustic waves and their application to single-mode oscillators. As a result of a theoretical analysis concrete delay lines are proposed.
Šimko Milan   +3 more
doaj   +1 more source

Coherent, high repetition rate tender x-ray free-electron laser seeded by an extreme ultra-violet free-electron laser oscillator

open access: yesNew Journal of Physics, 2020
A seeded FEL driven by a linac based on super conducting cavities, generating 10 ^8 –10 ^10 coherent photons per shot at 2–5 keV with 0.2–1 MHz of repetition rate, can address the need of a source devoted to fine analysis of matter using the linear ...
V Petrillo   +13 more
doaj   +1 more source

Noise spectrum of a tunnel junction coupled to a nanomechanical oscillator

open access: yes, 2007
A nanomechanical resonator coupled to a tunnel junction is studied. The oscillator modulates the transmission of the junction, changing the current and the noise spectrum.
Rammer, J., Shelankov, A. L., Wabnig, J.
core   +1 more source

Phase transitions in a mechanical system coupled to Glauber spins

open access: yes, 2010
A harmonic oscillator linearly coupled with a linear chain of Ising spins is investigated. The $N$ spins in the chain interact with their nearest neighbours with a coupling constant proportional to the oscillator position and to $N^{-1/2}$, are in ...
Bonilla, L. L., Carpio, A., Prados, A.
core   +1 more source

Dynamics of a quantum oscillator strongly and off-resonantly coupled with a two-level system

open access: yes, 2009
Beyond the rotating-wave approximation, the dynamics of a quantum oscillator interacting strongly and off-resonantly with a two-level system exhibit beatings, whose period equals the revival time of the two-level system.
Armour   +46 more
core   +1 more source

Unitary relation between a harmonic oscillator of time-dependent frequency and a simple harmonic oscillator with and without an inverse-square potential [PDF]

open access: yes, 2000
The unitary operator which transforms a harmonic oscillator system of time-dependent frequency into that of a simple harmonic oscillator of different time-scale is found, with and without an inverse-square potential. It is shown that for both cases, this
A.N. Seleznyova   +26 more
core   +2 more sources

Invention of the split-anode magnetron

open access: yesProceedings of the Japan Academy. Series B, Physical and Biological Sciences
Magnetron production and use far exceed that of other microwave tubes due to their high operational efficiency, power efficiency, and cost-effectiveness in production. The magnetron was named by A. W.
Hidenori MIMURA
doaj   +1 more source

Deflection of radiated sound waves by tuning the dynamic characteristics of the oscillator array

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In order to deflect the radiated sound waves by an array of sound sources, temporal phase differences between the adjacent sound sources are necessary.
Shunki TSUDA   +4 more
doaj   +1 more source

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