566 citations
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16 papers
Different Aspects of BFKL at NLL
Agustin Sabio Vera
Progress in the understanding of the BFKL approach in the NLL approximation is reported. The study based on the iteration of the kernel using the exponentiation of the gluon Regge…
Interplay between magnetic and spatial order in quasicrystals
E. Y. Vedmedenko, U. Grimm, R. Wiesendanger
The stable magnetisation configurations of antiferromagnets on quasiperiodic tilings are investigated theoretically. The exchange coupling is assumed to decrease exponentially with…
Robust "trapping states" in the motion of a trapped ion
S. Wallentowitz, W. Vogel, P. E. Toschek
A novel robust mechanism for the generation of "trapping states" is shown to exist in the coupling of a two-level system with an oscillator, which is based on nonlinearities in the…
AGB and post-AGB stars
Dieter Engels
Intermediate mass stars (1-8 solar masses) evolve along the Asymptotic Giant Branch after completion of hydrogen and helium core burning. At the tip they lose for several ten to hu…
Stellar evolution and the 'O-rich AGB sequence'
F. M. Jimenez-Esteban, D. Engels, P. Garcia-Lario
The `O-rich AGB sequence' is a well defined area occupied by oxygen-rich AGB stars (OH/IR) in the IRAS two-colour diagram [12]-[25] vs [25]-[60]. This sequence is interpreted in te…
Observations of Selected AGN with H.E.S.S
F. Aharonian et al.
A sample of selected active galactic nuclei (AGN) was observed in 2003 and 2004 with the High Energy Stereoscopic System (H.E.S.S.), an array of imaging atmospheric-Cherenkov teles…