Filters: Date: "2003-01" Collection: ir_uspace
1 - 25 of 7
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Gondolo, Paolo | Indirect detection of a subdominant density component of cold dark matter | We examine the detectability through indirect means of weakly interacting dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that the possibility of indirect detection of neutralinos from their annihilations in the Earth and Su... | WIMP; Weakly interacting massive particles; Annihilations | 2003-01 |
| 2 |
 |
Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Linear and nonlinear photoexcitation dynamics in ∏-conjugated polymers | Linear and nonlinear recombination kinetics with various lifetime distributions were identified for long-lived photoexcitations in a series of rr-conjugated polymer films using modulation frequency and excitation intensity dependencies of the photoinduced absorption. This includes monomolecular, bim... | Linear photoexcitation; Nonlinear photoexcitation; pi-conjugated polymers; Recombination kinetics | 2003-01 |
| 3 |
 |
Gondolo, Paolo | Measuring the prompt atmospheric neutrino flux with down-going muons in neutrino telescopes | In the TeV energy region and above, the uncertainty in the level of prompt atmospheric neutrinos would limit the search for diffuse astrophysical neutrinos. We suggest that neutrino telescopes may provide an empirical determination of the flux of prompt atmospheric electron and muon neutrinos by mea... | Neutrino telescopes; Prompt flux | 2003-01 |
| 4 |
 |
Wu, Yong-Shi | Quantum phase transition in a multicomponent Bose-Einstein condensate in optical lattices | We present a general lattice model for a multicomponent atomic Bose-Einstein system in an optical lattice. Using the model, we analytically study the quantum phase transition between the Mott insulator and a superfluid. A mean-field theory is developed from the Mott-insulator ground state. When the... | Quantum phase transitions; Optical lattices; Bose-Einstein condensation; Boson-Hubbard model; Superfluids | 2003-01 |
| 5 |
 |
Mishchenko, Eugene | Thermal conductivity of a two-dimensional electron gas with Coulomb interaction | We demonstrate that forward electron-electron scattering due to Coulomb interaction in a two-dimensional ballistic electron-gas leads to the (T ln T)21 temperature dependence of the thermal conductivity, which is logarithmically suppressed compared to the usual Fermi-liquid behavior. | Coulomb drag; Coulomb interaction | 2003-01 |
| 6 |
 |
Vardeny, Zeev Valentine | Ultrafast dynamics of excitons and solitons in disubstituted polyacetylene | We studied the ultrafast photoexcitation dynamics in disubstituted polyacetylene (DPA). We found two distinctively different relaxation channels for the photogenerated excitons; ionic and covalent pathways. In DPA films the photogenerated odd-parity (Bu) excitons that are responsible for the high ... | Ultrafast dynamics; Photoexcitation; Excitons; Disubstituted polyacetylene; Excitons; DPA; Relaxation channels | 2003-01 |
| 7 |
 |
Vardeny, Zeev Valentine; Raikh, Mikhail E. | Universal properties of random lasers | The design and fabrication of laser resonators is often difficult. However, random lasers occur in gain media with numerous scatterers and produce coherent laser emission without any predesigned cavity. The generation of coherent emission from multiple scattering is quite general and its basic prin... | Random lasers; Laser resonators; pi-conjugated polymers; Rhodamine-TiO2 suspensions; Random media; Random lasing | 2003-01 |
1 - 25 of 7