Results 51 to 60 of about 145,568 (137)

Tricritical Behavior in the Extended Hubbard Chains

, 2000
Phase diagrams of the one-dimensional extended Hubbard model (including nearest-neighbor interaction $V$) at half- and quarter-filling are studied by observing level crossings of excitation spectra using the exact diagonalization. This method is based on
A. A. Aligia, A. A. Aligia, A. A. Ovchinnikov, A. A. Ovchinnikov, A. Luther, B. Fourcade, B. Fourcade, C. N. Yang, D. K. Campbell, E. B. Kolomeisky, F. D. M. Haldane, F. D. M. Haldane, F. D. M. Haldane, F. Mila, G. I. Japaridze, G. I. Japaridze, G. P. Zhang, H. J. Schulz, H. J. Schulz, H. Q. Lin, H. Q. Lin, H. Shiba, I. Affleck, J. E. Hirsch, J. L. Cardy, J. M. Kosterlitz, J. M. Kosterlitz, J. Sólyom, J. Voit, J. Voit, J. W. Cannon, J. W. Cannon, K. Nomura, K. Nomura, K. Okamoto, K. Penc, K. Sano, L. Hulthen, L. P. Kadanoff, M. E. Simón, M. Fabrizio, M. Fowler, M. Nakamura, M. Nakamura, M. Nakamura, M. Nakamura, M. Ogata, M. Oshikawa, M. Takahashi, M. Yamanaka, Masaaki Nakamura, P. G. J. van Dongen, P. Reinicke, R. A. Bari, R. J. Bursill, R. T. Clay, S. Hirata, T. Giamarchi, T. Giamarchi, V. J. Emery, V. J. Emery, V. L. Berezinskii   +61 more
core   +1 more source

Models of X-ray Photoionization in LMC X-4: Slices of a Stellar Wind [PDF]

, 1998
We show that the orbital variation in the UV P Cygni lines of the X-ray binary LMC X-4 results when X-rays photoionize nearly the entire region outside of the X-ray shadow of the normal star. We fit models to HST GHRS observations of N V and C IV P Cygni
Bjorkman J. E., Bomans D. J., Bondi H., Bram Boroson, Brown J. C., Castor J., Fransson C., Groenewegen M. A. T., Hammerschlag-Hensberge G., Heemskerk M. H. M., Howarth I. D., John Raymond, Kaper L., Kudritzki R. P., Marquardt D. W., Nelder J. A., Pauldrach A., Pauldrach A., Pauldrach A., Pauldrach A. W. A., Richard McCray, S. D. Vrtilek, Sunyaev R., Timothy Kallman, van der Klis M., Wollaert J. P. M.   +25 more
core   +3 more sources

Detecting metal enrichment of the intergalactic medium with the two-point correlation function of the flux

Astronomy & Astrophysics
Context. The distribution and the abundance of metals in the intergalactic medium (IGM) have strong implications for galaxy formation and evolution models. The ionic transitions of heavy elements in quasar spectra can be used to probe both the mechanisms
Di Stefano S., D’Odorico V., Cupani G., Milaković D., Trost A., Cristiani S., Viel M., Carswell R. F.   +7 more
doaj   +1 more source

GRB host galaxies with VLT/X-Shooter: properties at 0.8 < z < 1.3 [PDF]

, 2015
Long gamma-ray bursts (LGRBs) are associated with the death of massive stars. Their host galaxies therefore represent a unique class of objects tracing star formation across the observable Universe.
Covino, S., Cupani, G., D'Avanzo, P., D'Elia, V., Fiore, F., Flores, H., Goldoni, P., Gomboc, A., Hammer, F., Japelj, J., Kruhler, T., Mannucci, F., Onori, F., Palazzi, E., Pian, E., Piranomonte, S., Randich, S., Rossi, A., Savaglio, S., Stella, L., Tagliaferri, G., Vergani, S. D.   +21 more
core   +4 more sources

Quantum phase transition in a minimal model for the Kondo effect in a Josephson junction

, 2004
We propose a minimal model for the Josephson current through a quantum dot in a Kondo regime. We start with the model that consists of an Anderson impurity connected to two superconducting (SC) leads with the gaps $\Delta_{\alpha}=|\Delta_{\alpha}| e^{i \
Anderson P. W., Avishai Y., Beenakker C. W. J., Clerk A. A., Glazman L. I., Hewson A. C., Hewson A. C., Ishizaka S., Jarrell M., Krishna-murth H. R., Kulik I. O., Kusakabe K., Matsumoto M., Matsuura T., Müller-Hartman, Oguri A., Rozhkov A. V., Sakai O., Sakai O., Satori K., Shiba H., Soda T., Spivak B. I., Vecino E., Yoshioka T.   +24 more
core   +1 more source

Crystal fields, disorder, and antiferromagnetic short-range order in Yb0.24Sn0.76Ru

, 2011
We report extensive measurements on a new compound (Yb0.24Sn0.76)Ru that crystallizes in the cubic CsCl structure. Valence band photoemission and L3 x-ray absorption show no divalent component in the 4f configuration of Yb.
A. Iandelli, A. Llobet, C. H. Booth, C. H. Wang, E. D. Bauer, F. Ronning, F. Trouw, H. W. Zandbergen, Han-oh Lee, J. D. Thompson, J. J. Joyce, J. M. Lawrence, J. S. Gardner, N. Kurita, Q. Xu, R. J. Cava, R. Movshovich, T. Durakiewicz, T. Klimczuk, Y. Tokiwa   +19 more
core   +3 more sources

Thermal and magnetic properties of integrable spin-1 and spin-3/2 chains with applications to real compounds

, 2004
The ground state and thermodynamic properties of spin-1 and spin-3/2 chains are investigated via exactly solved su(3) and su(4) models with physically motivated chemical potential terms.
A Foerster, Affleck I, Affleck I, Ajiro Y, Batchelor M T, Batchelor M T, Batchelor M T, Batchelor M T, Batchelor M T, Baxter R J, Carlin R L, Carlin R L, Dagotto E, Hirota K, Huang H Affleck I, Jimbo M, Jimbo M, Johnston D C, Kennedy T, Klümper A, Klümper A, Kuniba A, Kuniba A, M T Batchelor, McGuire J B, Milla F, N Oelkers, Orendá? M, Papanicolaou N, Pashchenko V A, Renard J P, Sakai T, Schlottmann P, Schollwöck U, Suzuki M, Takahashi M, Takahashi M, Takahashi M, Tsuboi Z, Tsuboi Z, Tsvelik A M, Tsvelik A M, Uimin G V, X-W Guan, Yang C N, Ying Z-J, Ying Z-J Guan X-W Foerster A Roditi I Chen B, Ying Z-J Roditi I Foerster A Chen B, Ying Z-J Roditi I Zhou H-Q   +48 more
core   +1 more source

Neutrinos from Off-Shell Final States and the Indirect Detection of Dark Matter

, 2012
We revisit the annihilation of dark matter to neutrinos in the Sun near the WW and tt kinematic thresholds. We investigate the potential importance of annihilation to WW* in a minimal dark matter model in which a Majorana singlet is mixed with a vector ...
Kearney, John, Pierce, Aaron
core   +1 more source

A Three-Dimensional Solution of Flows over Wings with Leading-Edge Vortex Separation. Part 1: Engineering Document [PDF]

A method of predicting forces, moments, and detailed surface pressures on thin, sharp-edged wings with leading-edge vortex separation in incompressible flow is presented.
Brune, G. W., Johnson, F. T., Lu, P., Rubbert, P. E., Weber, J. A.   +4 more
core   +1 more source

Lifting surface theory for a helicopter rotor in forward flight [PDF]

, 1984
A lifting surface theory was developed for a helicopter rotor in forward flight for compressible and incompressible flow. The method utilizes the concept of the linearized acceleration potential and makes use of the vortex lattice procedure. Calculations
Runyan, H. L., Tai, H.
core   +2 more sources