ar X iv : c on d - m at / 0 21 03 04 v 2 2 1 N ov 2 00 2 The mid - infrared AC Hall effect in optimally - doped

ar X iv : h ep - e x / 04 03 02 0 v 1 1 2 M ar 2 00 4 Search for Θ + and Ξ − − 3 / 2 pentaquarks in HERA - B

A search for Θ + (1540) and Ξ −− 3/2 (1860) pentaquark candidates has been performed in proton-induced reactions on C, Ti and W targets at √ s = 41.6 GeV studying the pK 0 S resp. Ξ − π − and Ξ − π + (and charge conjugated (c.c.)) decay channels at mid-rapidity. With sensitivities of Br×dσ/dx F < 5 to 25 µb/nucleon, we find no evidence for narrow pentaquark peaks in any of the studied final sta...

ar X iv : c on d - m at / 0 21 14 34 v 1 2 0 N ov 2 00 2 Solutions of the Gross - Pitaevskii equation in two dimensions

In two dimensions the Gross-Pitaevskii equation for a cold, dilute gas of bosons has an energy dependent coupling parameter describing particle interactions. We present numerical solutions of this equation for bosons in harmonic traps and show that the results can be quite sensitive to the precise form of the coupling parameter that is used. Solutions of the Gross-Pitaevskii equation in two dim...

ar X iv : n uc l - th / 0 21 10 85 v 1 2 7 N ov 2 00 2 1 Medium effects to the N ( 1535 ) resonance and η mesic nuclei

ar X iv : n uc l - ex / 0 21 00 14 v 2 2 0 N ov 2 00 2 1 Anisotropic flow

Recent experimental results on directed and elliptic flow, theoretical developments, and new techniques for anisotropic flow analysis are reviewed.

ar X iv : m at h / 04 10 61 1 v 2 [ m at h . A G ] 1 1 N ov 2 00 4 ON RATIONAL CUSPIDAL PROJECTIVE PLANE CURVES