Filters: Date: "2002-02" Collection: ir_uspace
1 - 25 of 3
| Creator | Title | Description | Subject | Date | ||
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Gondolo, Paolo | Cosmic ray positron excess and neutralino dark matter | Using a new instrument, the HEAT Collaboration has confirmed the excess of cosmic ray positrons that they first detected in 1994. We explore the possibility that this excess is due to the annihilation of neutralino dark matter in the galactic halo. We confirm that neutralino annihilation can produ... | Neutralinos; Supersymmetric models; Positron flux; Annihilations | 2002-02 |
| 2 |
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Wu, Yong-Shi | Renormalization group equations and the Lifshitz point in noncommutative Landau-Ginsburg theory | A one-loop renormalization group (RG) analysis is performed for noncommutative Landau-Ginsburg theory in an arbitrary dimension. We adopt a modern version of the Wilsonian RG approach, in which a shell integration in momentum space bypasses the potential IR singularities due to UV-IR mixing. The mo... | 2002-02 | |
| 3 |
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Liu, Feng | Self-organized nanoscale pattern formation on vicinal Si(111) surfaces via a two-stage faceting transition | We demonstrate a self-organized pattern formation on vicinal Si(111) surfaces that are miscut toward the [211] direction. All the patterns, consisting of a periodic array of alternating (7 X 7) reconstructed terraces and step-bunched facets, have the same periodicity and facet structure, independent... | Vicinal Si(111); Nanoscale pattern formation; Two-stage; Faceting transition | 2002-02 |
1 - 25 of 3