نتایج جستجو برای: ground effect

تعداد نتایج: 1767681  

1995
A. Bianconi S. Jeschonnek N. N. Nikolaev B. G. Zakharov

Do final state interactions obscure short range correlation effects in quasielastic A(e, e ′ p) scattering ? A b s t r a c t Are short range correlations in the ground state of the target nucleus (initial state correlations ISC) observable in experiments on quasielastic A(e, e ′ p) scattering at large missing momentum p m ? Will the missing momentum spectrum observed at CEBAF be overwhelmed by ...

2000
ChangSoo Park D. K. Park

The role of Aharonov-Bohm effect in quantum tunneling is examined when a potential is defined on the S1 and has N -fold symmetry. We show that the low-lying energy levels split from the N -fold degenerate ground state oscillate as a function of the Aharonov-Bohm phase, from which general degeneracy conditions depending on the magnetic flux is obtained. We apply these results to the spin tunneli...

2002

Relations between the total fl+ Gamow-Teller (GT+) strength and the E2 strength are further examined. It is found that in shell-model calculations for N = Z nuclei, in which changes in deformation are induced by varying the single-particle energies, the total GT+ or GT_ strength decreases monotonically with increasing values of the B (E2) from the ground state to the first excited jn = 2 + stat...

1993
Esko Keski-Vakkuri Xiao-Gang Wen

The structure of ground states of generic FQH states on a torus is studied by using both effective theory and electron wave function. The relation between the effective theory and the wave function becomes transparent when one considers the ground state structure. We find that the non-abelian Berry’s phases of the abelian Hall states generated by twisting the mass matrix are identical to the mo...

2007
L. E. Calvet R. G. Wheeler M. A. Reed

We explore the low temperature transport through a resonant acceptor impurity located near a metalsemiconductor interface and observe a large shift 12 meV and splitting 0.8 meV of its ground state. The shift is attributed to the quadratic Stark effect resulting from the electric field of the electrostatic barrier. The splitting is too large to be attributed to a linear Stark splitting. We calcu...

2008
Shin-ichiro Yoshikawa Makoto Senda Seiji Miyashita

The selection of the ground state among nearly degenerate states due to quantum fluctuations is studied for the S = 1/2 XY-like Heisenberg antiferromagnets on the triangular lattice in the magnetic field applied along the hard axis, which was first pointed out by Nikuni and Shiba. We find that the selected ground state sensitively depends on the degree of the anisotropy and the magnitude of the...

2004
D. Reiß W. Neuhauser P. E. Toschek

The driven evolution of the spin of an individual atomic ion on the ground-state hyperfine resonance is impeded by the observation of the ion in one of the pertaining eigenstates. Detection of resonantly scattered light identifies the ion in its upper " bright " state. The lower " dark " ion state is free of relaxation and correlated with the detector by a null signal. Null events represent the...

2009
Frederick Y. Wu

We have performed high precision measurements of level splitting and level shifts of an excited atomic state in the presence of an intense optical field. Such measurements are important to the understanding of the details of atom-field interaction and in the development of high precision optical clocks. The level we studied is an isolated 2 single magnetic sublevel 3 P3/2 (F= 3, 2m F = 3) in so...

2014
Shilpi Lavania

As the frequency of operation has attained a range of GHz and signal rise time continues to increase interconnect technology is suffering due to various high frequency effects as well as ground bounce problem. In some recent studies a high frequency effect i.e. skin effect has been modeled and its drawbacks have been discussed. This paper strives to make an impression on the advantage side of m...

2004
A. S. Kheifets Igor Bray

The first absolute se ,3ed measurements, by Lahmam-Bennani et al. [Phys. Rev. A 59, 3548 (1999)], have been recently approximately reproduced by Berakdar [Phys. Rev. Lett. 85, 4036 (2000)] and supported by Jones and Madison [Phys. Rev. Lett. 91, 073201 (2003)], but with widely differing conclusions. The former indirectly implied that the Born-CCC-based calculations of Kheifets et al. [J. Phys. ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید