نتایج جستجو برای: quantum parameters

تعداد نتایج: 858744  

2002
Lewis P. Shapiro Raymond Kent

In a Principles and Parameters syntax framework sentences are derived by two operations, merger and movement. Merger takes two categories as input (e.g., V and NP) and merges them into a single, higher-order category (e.g., VP). There are, however, constraints on the categories that can be merged successfully. Consider the following pairs: 1a. [NP The girl] sneezed 1b. *[NP The girl] sneezed [N...

افتخاری, کاوه, خیری فام, حسین, عباسیان, کریم,

We propose a novel two state and all-optical controllable switch using DIT, Kerr effect and interaction between quantum dots (QD) and quantum electrodynamics cavity (CQED). The two state and all-optical controllable switch is coupled to photonic waveguide from a rapid nonlinear environment (photonic crystal) and CQED. We consider the nano-crystal are doped to crystal photonic cavity as a 4-leve...

Adders and multipliers are two main units of the computer arithmetic processors and play an important role in reversible computations. The binary multiplier consists of two main parts, the partial products generation circuit (PPGC) and the reversible parallel adders (RPA). This paper introduces a novel reversible 4×4 multiplier circuit that is based on an advanced PPGC with Peres gates only. Ag...

2004
Giacomo Cacciapaglia Csaba Csáki Christophe Grojean John Terning

We consider various constraints on Higgsless models of electroweak symmetry breaking based on a bulk SU(2)L×SU(2)R×U(1)B−L gauge group in warped space. First we show that the S parameter which is positive if fermions are localized on the Planck brane can be lowered (or made vanishing) by changing the localization of the light fermions. If the wave function of the light fermions is almost flat t...

Journal: :journal of the iranian chemical research 0
mohsen lashgari department of chemistry, institute for advanced studies in basic sciences (iasbs), p.o. box 45195- 1159, zanjan, iran mohammad-reza arshadi department of chemistry, sharif university of technology, p.o. box 11365-9516, tehran, iran gholam-abbas parsafar department of chemistry, sharif university of technology, p.o. box 11365-9516, tehran, iran

matrix analysis of corrosion inhibition phenomena (macip), in which an inhibitor isconsidered as a point in a multi-dimensional virtual efficiency space, was performed on somepyridine derivatives. the needed molecular parameters such as homo and lumo energylevels, charge densities on hetero atom, dipole moment, heat of formation, and total energyvalues were obtained by means of semi-empirical q...

Journal: :journal of sciences, islamic republic of iran 2013
m. sahrai b. arzhang h. seifoory p. navaeipour

the time evaluation of quantum entropy in a four-level double- type atomic system is theoretically investigated. quantum entanglement of the atom and its spontaneous emission fields is then discussed via quantum entropy. it is found that the degree of entanglement can be increased by the quantum interference induced by spontaneous emission. the phase dependence of the atom-field entanglement is...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1389

there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...

H. Rasooli S., S. K. Seyyedi S. S. Zabihi

The electronic conductance at zero temperature through a quantum wire with side-connected asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting Hamiltonian Anderson tunneling method. In this paper we concentrate on the configuration of the quantum dot rings. We show that the asymmetric structure of QD-scatter system strongly influences the amplitude an...

1998
M. W. Evans

Classical electrodynamics is used to demonstrate electron and proton spin resonance induced by classical, monochromatic, circularly polarized radiation. The effect is present in SU(2) symmetry as indicated by the minimal prescription, whose covering group is O(3). The interaction Hamiltonian is shown to be, H =-aS 3 σ Z ¿ k, where a is the electron or proton polarizability; S 3 is the third Sto...

2008
A Nehme

In the presence of photons, the neutral K ℓ4 decay, K 0 → π 0 π − ℓ + ν ℓ , can be parameterized in terms of three vectorial, one anomalous, and one tensorial form factors. We present here analytic expressions of two vectorial form factors, f and g, calculated at one-loop level in the framework of chiral perturbation theory based on the effective La-grangian including mesons, photons, and lepto...

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