Zobrazeno 1 - 10 of 49 pro vyhledávání: '"Taekoon Lee"'
1
Akademický článek
A model for time-evolution of coupling constants
Autor: Taekoon Lee
Publikováno v: Physics Letters B, Vol 849, Iss , Pp 138424- (2024)
A general model is proposed for time-varying coupling constants in field theory, assuming the ultraviolet cutoff is a varying entity in the expanding universe. It is assumed that the cutoff depends on the scale factor of the universe and all bare cou
Externí odkaz: https://doaj.org/article/0fd17d251a6b4238a06375f3a7080899
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2
Akademický článek
Flavor dependence of normalization constant for an infrared renormalon
Autor: Taekoon Lee
Publikováno v: Physics Letters B, Vol 742, Iss , Pp 327-329 (2015)
An ansatz is proposed for the flavor dependence of the normalization constant for the first IR renormalon in heavy quark pole mass.
Externí odkaz: https://doaj.org/article/4a48b06803544b0792228c90aa27390b
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3
Dynamical model of ϕ meson photoproduction on the nucleon and He4
Autor: Yongseok Oh, Seung-il Nam, Taekoon Lee, Sang-Ho Kim
Publikováno v: Physical Review C. 104
We investigate $\ensuremath{\phi}$ meson photoproduction on the nucleon and $^{4}\mathrm{He}$ targets within a dynamical model approach based on a Hamiltonian which describes the production mechanisms by the Pomeron exchange, meson exchange, $\ensure
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfdfe07572a6970222586203c5ddd9dc
https://doi.org/10.1103/physrevc.104.045202
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4
Extracting gluon condensate from the average plaquette
Autor: Taekoon Lee
Publikováno v: Nuclear and Particle Physics Proceedings. :181-184
The perturbative contribution in the average plaquette is subtracted using Borel summation and the remnant of the plaquette is shown to scale as a dim-4 condensate. A critical review is presented of the renormalon subtraction scheme that claimed a di
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83325f3e7488778d2e26121ee8f0be68
https://doi.org/10.1016/j.nuclphysbps.2015.01.039
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6
Bending of light in a Coulomb Gas
Autor: Taekoon Lee
Photons traveling in a background electromagnetic field may bend via the vacuum polarization effect with the background field. The bending in a Coulomb field by a heavy nucleus is small even at a large atomic number, rendering it difficult to detect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc6c19a71f6472e96fa8f0a3e18c1c17
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8
Light bending by a black body
Autor: Taekoon Lee, Jin Young Kim
Publikováno v: Journal of the Korean Physical Society. 65:948-951
We consider the velocity shift of light when the vacuum is modified by the finite temperature quantum electrodynamic effect. Within the geometric optics formalism, we calculate the bending angle of a light ray when the index of refraction has a gradi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30a87f8518360498e487fc2388c5d8f0
https://doi.org/10.3938/jkps.65.948
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10
Chiral radiative corrections and the Ds(2317)/D(2308) mass puzzle
Autor: Ian Woo Lee, Taekoon Lee, D.-P. Min, Byung-Yoon Park
Publikováno v: The European Physical Journal C. 49:737-741
We show that one loop chiral corrections for heavy-light mesons in potential model can explain the small mass of D_s(2317) as well as the small mass gap between D_s(2317) and D(2308).
To appear in EPJC. A figure and references addeded
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::842b8f20f5d7ad9cdaaf33519b41789d
https://doi.org/10.1140/epjc/s10052-006-0149-7
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