Fe b 20 09 Searching for exotic states in the NπK system

Fe b 20 09 Classes of admissible exchange - correlation density functionals for pure spin and angular momentum states

We analyze the various approaches to construct exchange-correlation functionals which are able to describe states of definite spin multiplicity in the DFT realm and outline the characteristics of possible functionals consistent with the Kohn-Sham theory. To achieve this goal the unitary group technique is applied to label many-electron states of definite total spin and to calculate the correspo...

0 Fe b 20 09 FINITE MORPHISMS FROM CURVES OVER DEDEKIND RINGS TO

A theorem of B. Green states that if A is a Dedekind ring whose fraction field is a local or global field, every normal projective curve over Spec(A) has a finite morphism to P1A. We give a different proof of a variant of this result using intersection theory and work of Moret-Bailly.

ar X iv : 0 90 2 . 32 39 v 1 [ m at h . D G ] 1 8 Fe b 20 09 Gauge theory in higher dimensions , II

ar X iv : 0 90 2 . 39 12 v 1 [ m at h . G R ] 2 3 Fe b 20 09 Brent Everitt The Combinatorial Topology

ar X iv : 0 90 2 . 41 09 v 1 [ he p - ph ] 2 4 Fe b 20 09 pp̄ → Λ c Λ̄ c within a Handbag Picture – Cross

We study the process pp̄ → ΛcΛ̄c within the generalized parton picture. Our starting point is the double handbag diagram which factorizes into soft generalized parton distributions and a hard subprocess amplitude for uū → cc̄. Our cross-section predictions may become interesting in view of forthcoming experiments at FAIR in Darmstadt.