Zobrazeno 1 - 10
of 634
pro vyhledávání: '"J. C. Kimball"'
Autor:
R E Benenson, J C Kimball
Publikováno v:
European Journal of Physics. 23:95-102
In order to illustrate Euler's equations for rotation, we have constructed an apparatus in which a circular disc is attached to horizontal axle, such that the disc axis and axle are at a 45° angle. The total angular momentum and constant angular vel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b5067b27a3f574963905eade1a3488a
https://doi.org/10.1088/0143-0807/23/2/301
https://doi.org/10.1088/0143-0807/23/2/301
Publikováno v:
Journal of Low Temperature Physics. 129:79-92
We study the collective excitations of a trapped Bose–Einstein condensate for a large but finite number of atoms. Since our calculations go beyond the Thomas–Fermi approximation, the “quantum pressure” and the change of chemical potential due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dea76d454b3b088514094d1b886b7c5
https://doi.org/10.1023/a:1020001519190
https://doi.org/10.1023/a:1020001519190
Publikováno v:
Physics of Atomic Nuclei. 64:2185-2189
We propose an alternative role of the harmonic oscillator algebra. Observing that the q-deformed harmonic oscillator algebra defines the Chebyshev q object, we show that the q-free particle and the pulsed oscillator are special cases of the Chebyshev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a73458cf0af96382fed58f31df2199d6
https://doi.org/10.1134/1.1432923
https://doi.org/10.1134/1.1432923
Publikováno v:
Journal of Physics: Condensed Matter. 12:29-42
The semi-infinite axial next-nearest-neighbour Ising (ANNNI) model in the disordered phase is treated within a molecular-field approximation, and the singularities of various response functions characterizing the critical behaviour at the surface are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::875796b0229e7f3ea91ff48a8f6e4eec
https://doi.org/10.1088/0953-8984/12/1/303
https://doi.org/10.1088/0953-8984/12/1/303
Publikováno v:
Physical Review E. 59:3196-3201
We describe an extension of the Fredrickson-Andersen model (or n-spin facilitated kinetic Ising model) which exhibits a transition similar to a glass transition. Our extension incorporates long-range effects. Exact or numerically accurate results are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f20221884e08462a8ab96d0ccf5dbee
https://doi.org/10.1103/physreve.59.3196
https://doi.org/10.1103/physreve.59.3196
Autor:
J. C. Kimball
Publikováno v:
Foundations of Physics. 28:87-105
States on a Sierpinski triangle are described using a formally exact and general Hamiltonian renormalization. The spectra of new (as well as previously examined) models are characterized. Numerical studies based on the renormalization suggest that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65a7c4d41c585a56c1b1de379af46d01
https://doi.org/10.1023/a:1018760504393
https://doi.org/10.1023/a:1018760504393
Autor:
Harold Story, J C Kimball
Publikováno v:
European Journal of Physics. 19:15-24
Fermat's principle asserts that light takes the path of minimum (actually extremal) time. Sailors often wish to find paths of minimum time. Thus by thinking of a sailboat as a light ray, a sailor can use Fermat's principle to describe the optimum sai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9fd3212b82f9809a47e66b452a2377d
https://doi.org/10.1088/0143-0807/19/1/004
https://doi.org/10.1088/0143-0807/19/1/004
Autor:
J. C. Kimball, D. Bittel
Publikováno v:
Journal of Applied Physics. 74:877-883
Hollow glass fibers can guide x rays because glancing‐angle collisions with a smooth glass surface are highly reflective. Surface roughness decreases this reflectivity. We have developed relatively simple expressions for the effects of surface roug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4ae6ac9dcf9191ea4d6f3485d17f18b
https://doi.org/10.1063/1.354881
https://doi.org/10.1063/1.354881
Publikováno v:
Physical Review A. 45:7065-7072
An electron in a periodic crystal potential, which is subjected to an additional periodic pulsed potential, is an example of a system which can be modeled by the kicked Harper model. The relative simplicity of this model facilitates a comparison of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c722131f5c23dc87fa732117686df5ec
https://doi.org/10.1103/physreva.45.7065
https://doi.org/10.1103/physreva.45.7065
Autor:
H. L. Frisch, J. C. Kimball
Publikováno v:
Theoretica Chimica Acta. 82:351-356
We deal with two diffusion problems: Space-integrated conserved entities characterizing very fast - diffusion - controlled reactions, such as time lags, etc. are universal. They are given by relationships which do not reflect the failure of the mean
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d14f4772edd07b50a7b3b43f9c4e0c13
https://doi.org/10.1007/bf01113937
https://doi.org/10.1007/bf01113937