搜索结果: 61-75 共查到“物理学 coupling”相关记录146条 . 查询时间(0.078 秒)
Cladding mode coupling in highly localized fiber Bragg gratings: modal properties and transmission spectra
Cladding mode fiber Bragg gratings modal properties transmission spectra
2010/11/16
The spectral characteristics of a fiber Bragg grating (FBG) with a transversely inhomogeneous refractive index profile, differs con- siderably from that of a transversely uniform one. Transmission sp...
Spin waves in magnetic quantum wells with Coulomb interaction and $sd$ exchange coupling
Spin waves magnetic quantum wells Coulomb interaction
2010/11/24
We theoretically describe the spin excitation spectrum of a two dimensional electron gas embedded in a quantum well with localized magnetic impurities. Compared to the previous work,
we introduce equ...
Non-perturbative running of the coupling from four flavour lattice QCD with staggered quarks
Non-perturbative running coupling from four flavour lattice QCD staggered quarks
2011/1/14
Using the Schrödinger functional (SF) with a single staggered fermion field we calculate the SF
coupling in four-flavour QCD for a wide range of energies and lattice sizes up to L/a = 16.
Preli...
Effective Polyakov-loop theory for pure Yang-Mills from strong coupling expansion
Effective Polyakov-loop theory pure Yang-Mills strong coupling expansion
2011/1/13
Lattice Yang-Mills theories at finite temperature can be mapped onto effective 3d spin systems,
thus facilitating their numerical investigation.
Development in the Scattering Matrix Theory: From Spin-Orbit-Coupling Affected Shot Noise to Quantum Pumping
Scattering Matrix Theory Spin-Orbit-Coupling Affected Shot Noise Quantum Pumping
2010/11/23
The review chapter starts by a pedagogical introduction to the general concept of the scattering theory: from the fundamental wave-function picture to the second-quantization language, with the aim to...
Running couplings and operator mixing in the gravitational corrections to coupling constants
Running couplings operator mixing gravitational corrections
2010/12/21
The use of a running coupling constant in renormalizable theories is well known, but the imple-
mentation of this idea for effective field theories with a dimensional coupling constant is in general ...
Coarsening Kinetics of a Two Dimensional O(2) Ginzburg-Landau Model: Effect of Reversible Mode Coupling
Coarsening Kinetics Two Dimensional O(2) Ginzburg-Landau Model
2010/11/25
We investigate, via numerical simulations, the phase ordering kinetics of a two-dimensional
soft-spin O(2) Ginzburg-Landau model when a reversible mode coupling is included via the
conserved conjuga...
Contribution of interband effects caused by long-wavelength transverse optical phonons to electron-phonon coupling in doped polar insulators
Contribution of interband effects electron-phonon coupling doped polar insulators
2010/11/22
We estimate the contribution of the long-wavelength el–TO–ph interaction and discuss the effect it has on electron pairing in doped polar systems like SrTiO3 and PbTe. The analytical and numerical res...
$q{\bar q}$ Potential at Finite T and Weak Coupling in ${\cal N}=4$
$q{\bar q}$ Potential Finite T Weak ${\cal N}=4$
2011/1/10
We compute the potential between a q¯q singlet for N = 4 SUSY with gauge group SU(N) at finite temperature T, large distances rT ≫ 1 and weak coupling g. As a first step.
Normal state resistivity of Ba$_{1-x}$K$_x$Fe$_2$As$_2$: evidence for multiband strong-coupling behavior
Normal state resistivity multiband strong-coupling behavior
2010/11/19
We present theoretical analysis of the normal state resistivity in multiband superconductors in the framework of Eliashberg theory. The results are compared with measurements of the temperature depend...
We discuss the status of different determinations of as, motivating a precise and reliable computation from lattice QCD. In order to suppress perturbative errors, the non-perturbative computation has ...
Effective Polyakov-loop theory for pure Yang-Mills from strong coupling expansion
Effective Polyakov-loop theory Yang-Mills
2011/1/6
Lattice Yang-Mills theories at finite temperature can be mapped onto effective 3d spin systems, thus facilitating their numerical investigation. Using strong-coupling expansions we derive effective ac...
Coupling molecular spin states by photon-assisted tunneling
Coupling molecular spin states photon-assisted tunneling
2010/11/9
Artificial molecules containing just one or two electrons provide a powerful platform for studies of orbital and spin quantum dynamics in nanoscale devices. A well-known example of these dynamics is t...
A superconducting qubit with Purcell protection and tunable coupling
superconducting qubit Purcell protection tunable coupling
2010/10/27
We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable coupling strength g. We show that this coupling strength can be tuned from zero to values tha...
Qubit-oscillator system under ultrastrong coupling and extreme driving
Qubit-oscillator system ultrastrong coupling extreme driving
2010/10/19
We introduce a novel approach to study a driven qubit-oscillator system in the ultrastrong coupling regime, where the ratio g/ between coupling strength and oscillator frequency approaches unity or go...