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5 papers · 1 filter
Coexistence of Non-Conventional Condensates in Two-Level Bose Atom System
M. Corgini, C. Rojas-Molina, D. P. Sankovich
In the framework of the Bogolyubov approximation and using the Bogolyubov inequalities we give a simple proof of the coexistence of two non-conventional Bose-Einstein condensates i…
Finiteness theorems for algebraic cycles of small codimension on quadric fibrations over curves
Cristian D. González-Avilés
We obtain finiteness theorems for algebraic cycles of small codimension on quadric fibrations X over curves over perfect fields k. For example, if k is finitely generated over Q an…
The very massive X-ray bright binary system Wack 2134 (= WR 21a)
V. S. Niemela, R. C. Gamen, R. H. Barba +5
From the radial velocities of the N IV 4058 and He II 4686 emission lines, and the N V 4604-20 absorption lines, determined in digital spectra, we report the discovery that the X-r…
GEMINI near-infrared spectroscopic observations of young massive stars embedded in molecular clouds
A. Roman-Lopes, Z. Abraham, R. Ortiz +1
K-band spectra of young stellar candidates in four southern hemisphere clusters have been obtained with the near-infrared spectrograph GNIRS in Gemini South. The clusters are assoc…
Freud's Identity of Differential Geometry, the Einstein-Hilbert Equations and the Vexatious Problem of the Energy-Momentum Conservation in GR
Eduardo A. Notte-Cuello, Waldyr A. Rodrigues
We reveal in a rigorous mathematical way using the theory of differential forms, here viewed as sections of a Clifford bundle over a Lorentzian manifold, the true meaning of Freud'…