5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR339 papers
- European Southern ObservatoryCL298 papers
- Center for Astrophysics Harvard & SmithsonianUS294 papers
- University of CambridgeGB274 papers
- Osservatorio Astronomico di PadovaIT271 papers
- University of WarwickGB256 papers
- Stockholm UniversitySE237 papers
- Max Planck Institute for AstrophysicsDE213 papers
- Las Cumbres Observatory Global Telescope NetworkUS211 papers
- AlbaNovaSE210 papers
- Space Telescope Science InstituteUS208 papers
- University of St AndrewsGB193 papers
36 papers · 1 filter
Equation of state of compressed matter: A simple statistical model
L. Delle Site
We propose a simple approach for studying systems of compressed matter based on the Thomas-Fermi statistical model of single atom. The central point of our work is the development…
B-type Supergiants in the SMC: Chemical compositions and comparison of static and unified models
P. L. Dufton, R. S. I. Ryans, C. Trundle +4
High-resolution UCLES/AAT spectra are presented for nine B-type supergiants in the SMC, chosen on the basis that they may show varying amounts of nuclear-synthetically processed ma…
Dissociation spectrum of H from a short, intense infrared laser pulse: vibration structure and focal volume effects
Liang-You Peng, I D Williams, J F McCann
The dissociation spectrum of the hydrogen molecular ion by short intense pulses of infrared light is calculated. The time-dependent Schrödinger equation is discretized and integrat…
Strain Gradients in Epitaxial Ferroelectrics
G. Catalan, B. Noheda, J. McAneney +2
X-ray analysis of ferroelectric thin layers of Ba1/2Sr1/2TiO3 with different thickness reveals the presence of internal strain gradients across the film thickness and allows us to…
Umklapp scattering of pairs in BCS superconductivity theory
X. H. Zheng, D. G. Walmsley
The BCS theory of superconductivity is extended to recognize pairing of electrons by both normal and umklapp scattering. Application of the variational approach shows that coexiste…
Chemical compositions of Four B-type Supergiants in the SMC Wing
J. -K. Lee, W. R. J. Rolleston, P. L. Dufton +1
High-resolution UCLES/AAT spectra of four B-type supergiants in the SMC South East Wing have been analysed using non-LTE model atmosphere techniques to determine their atmospheric…
Qubit state guidance without feedback
Mauro Paternostro, M. S. Kim
We study a protocol for two-qubit state guidance that does not rely on feedback mechanisms. In our scheme, entanglement can be concentrated by arranging the interactions of the qub…
High-Field Conduction in Barium Titanate
J. F. Scott, F. D. Morrison, P. Zubko +5
We present current-voltage studies of very thin (ca. 77 nm) barium titanate single crystals up to 1.3 GV/m applied field. These show that the mechanism of leakage current at high f…
The ultraviolet and optical spectra of luminous B-type stars in the Small Magellanic Cloud
C. J. Evans, D. J. Lennon, N. R. Walborn +2
We present ultraviolet spectra from the Space Telescope Imaging Spectrograph (STIS) of 12 early B-type stars in the Small Magellanic Cloud (SMC), comprising 9 supergiants and 3 gia…
Nonclassicality of a photon-subtracted Gaussian field
M. S. Kim, E. Park, P. L. Knight +1
Recently, a non-Gaussian field, which may be a useful basis for entanglement distillation and efficient quantum teleportation, has been experimentally produced by subtracting a pho…
The sub-millimetre evolution of V4334 Sgr (Sakurai's Object)
A. Evans, T. R. Geballe, V. H. Tyne +3
We report the results of monitoring of V4334 Sgr (Sakurai's Object) at 450 microns and 850 microns with SCUBA on the James Clerk Maxwell Telescope. The flux density at both wavelen…
Photometric Observations of the Type Ia SN 2002er in UGC 10743
G. Pignata, F. Patat, S. Benetti +20
Extensive light and colour curves for the Type Ia supernova SN 2002er are presented as part of the European Supernova Collaboration. We have collected UBVRI photometry from ten dif…
Greenberger-Horne-Zeilinger Nonlocality in Arbitrary Even Dimensions
Jinhyoung Lee, Seung-Woo Lee, M. S. Kim
We generalize Greenberger-Horne-Zeilinger (GHZ) nonlocality to every even-dimensional and odd-partite system. For the purpose we employ concurrent observables that are incompatible…
First-principles study of ferroelectricity and isotope effects in H-bonded KDP crystals
S. Koval, J. Kohanoff, J. A. Lasave +2
By means of extensive first-principles calculations we studied the ferroelectric phase transition and the associated isotope effect in KH2PO4 (KDP)
Quantum state transfer in imperfect artificial spin networks
M. Paternostro, G. M. Palma, M. S. Kim +1
High-fidelity quantum computation and quantum state transfer are possible in short spin chains. We exploit a system based on a dispersive qubit-boson interaction to mimic XY coupli…
Transport in nanoscale systems: the microcanonical versus grand-canonical picture
M. Di Ventra, T. N. Todorov
We analyse a picture of transport in which two large but finite charged electrodes discharge across a nanoscale junction. We identify a functional whose minimisation, within the sp…
A Be star with a low nitrogen abundance in the SMC cluster NGC330
D. J. Lennon, J. -K. Lee, P. L. Dufton +1
High-resolution UVES/VLT spectra of B12, an extreme pole-on Be star in the SMC cluster NGC330, have been analysed using non-LTE model atmospheres to obtain its chemical composition…
Results from the Wide Angle Search for Planets Prototype (WASP0) I: Analysis of the Pegasus Field
Stephen R. Kane, Andrew Collier Cameron, Keith Horne +5
WASP0 is a prototype for what is intended to become a collection of wide-angle survey instruments whose primary aim is to detect extra-solar planets transiting across the face of t…
CaII K interstellar observations towards early disc and halostars - Paper II; distances to IVCs and HVCs
J. V. Smoker, B. B. Lynn, W. R. J. Rolleston +8
We compare existing high spectral resolution (R=40,000) CaII K observations towards 88 mainly B-type stars, and new observations at R=10,000 towards 3 stars, with 21-cm HI emission…
High-contrast modulation of light with light by control of surface plasmon polariton wave coupling
A. V. Krasavin, A. V. Zayats, K. F. MacDonald +1
We have demonstrated a new mechanism for modulating light with light by controlling the efficiency with which light is coupled into a plasmon polariton wave. An optical fluence of…
Vibrational coherent quantum computation
Mauro Paternostro, M. S. Kim, P. L. Knight
A long-lived coherent state and non-linear interaction have been experimentally demonstrated for the vibrational mode of a trapped ion. We propose an implementation of quantum comp…
Radiation Pressure Dominate Regime of Relativistic Ion Acceleration
T. Esirkepov, M. Borghesi, S. V. Bulanov +2
The electromagnetic radiation pressure becomes dominant in the interaction of the ultra-intense electromagnetic wave with a solid material, thus the wave energy can be transformed…
Generation of macroscopic superposition states with small nonlinearity
H. Jeong, M. S. Kim, T. C. Ralph +1
We suggest a scheme to generate a macroscopic superposition state (Schrodinger cat state) of a free-propagating optical field using a beam splitter, homodyne measurement and a very…
Complete conditions for entanglement transfer
M. Paternostro, W. Son, M. S. Kim
We investigate the conditions to entangle two qubits interacting with local environments driven by a continuous-variable correlated field. We find the conditions to transfer the en…