93,120 research outputs found
Halpern-Huang directions in effective scalar field theory
Halpern and Huang recently showed that there are relevant directions in the
space of interactions at the Gaussian fixed point. I show that their result can
be derived from Polchinski's form of the Wilson renormalization group. The
derivation shows that the existence of these directions is independent of the
cutoff function used.Comment: 6 pages, plain Te
Sergio F. MartĂnez y Xiang Huang. 2015. Hacia una FilosofĂa de la Ciencia Centrada en Prácticas
Review of Sergio F. MartĂnez y Xiang Huang. 2015. Hacia una FilosofĂa de la Ciencia Centrada en Práctica
Baryon-meson interactions in chiral quark model
Using the resonating group method (RGM), we dynamically study the
baryon-meson interactions in chiral quark model. Some interesting results are
obtained: (1) The Sigma K state has an attractive interaction, which
consequently results in a Sigma K quasibound state. When the channel coupling
of Sigma K and Lambda K is considered, a sharp resonance appears between the
thresholds of these two channels. (2) The interaction of Delta K state with
isospin I=1 is attractive, which can make for a Delta K quasibound state. (3)
When the coupling to the Lambda K* channel is considered, the N phi is found to
be a quasibound state in the extended chiral SU(3) quark model with several MeV
binding energy. (4) The calculated S-, P-, D-, and F-wave KN phase shifts
achieve a considerable improvement in not only the signs but also the
magnitudes in comparison with other's previous quark model study.Comment: 5 pages, 2 figures. Talk given at 3rd Asia Pacific Conference on
Few-Body Problems in Physics (APFB05), Korat, Nakhon Ratchasima, Thailand,
26-30 Jul 200
Two new species of stag beetles (Coleoptera: Lucanidae) from western Yunnan, China
Himaloaesalus gaoligongshanus Huang and Chen, new species (Coleoptera: Lucanidae: Aesalinae) is described from the Gaoligongshan Mts., Yunnan, China. It is the fi fth species of the genus Himaloaesalus Huang and Chen. This new species is similar to the Himalayan species Himaloaesalus himalayicus Kurosawa and H. saburoi Araya et al., from which it is distinguished. The male and female genitalia of all the known species of Himaloaesalus are illustrated. Dorcus yongreni Huang and Chen, new species (Coleoptera: Lucanidae: Lucaninae) is described from Ruili area, Yunnan, China. It belongs to the elegans group (Huang and Chen 2013). This new species is similar to the Indian species Dorcus apatani (Okuda and Maeda), new combination, originally described in Digonophorus Waterhouse. The male genitalia of both species are compared and illustrated
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