Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR5k papers
- University of OxfordGB3.5k papers
- University of EdinburghGB3k papers
- University College LondonGB2.9k papers
- University of ManchesterGB2.9k papers
- Heidelberg UniversityDE2.5k papers
- University of MichiganUS2.4k papers
- University of BirminghamGB2.3k papers
- University of WarwickGB2.3k papers
- Aix-Marseille UniversitéFR2.3k papers
- Rutherford Appleton LaboratoryGB2.2k papers
- European Organization for Nuclear ResearchCH2.2k papers
553 papers · 1 filter
Deviations from passive evolution - star formation and the UV excess in z~1 radio galaxies
K. J. Inskip, P. N. Best, M. S. Longair
Galaxy colours are determined for two samples of 6C and 3CR radio sources at z~1, differing by a factor of ~6 in radio power. Corrections are made for emission line contamination a…
Quantum state merging and negative information
Michal Horodecki, Jonathan Oppenheim, Andreas Winter
We consider a quantum state shared between many distant locations, and define a quantum information processing primitive, state merging, that optimally merges the state into one lo…
All possible bipartite positive-operator-value measurements of two-photon polarization states
S. E. Ahnert, M. C. Payne
Here we propose an implementation of all possible Positive Operator Value Measures (POVMs) of two-photon polarization states. POVMs are the most general class of quantum measuremen…
A CH3CN and HCO+ survey towards southern methanol masers associated with star formation
C. R. Purcell, R. Balasubramanyam, M. G. Burton +32
We present the initial results of a 3-mm spectral line survey towards 83 methanol maser selected massive star-forming regions. Here we report observations of the J=5-4 and 6-5 rota…
Bohm-Aharonov type effects in dissipative atomic systems
Allan I. Solomon, Sonia G. Schirmer
A state in quantum mechanics is defined as a positive operator of norm 1. For finite systems, this may be thought of as a positive matrix of trace 1. This constraint of positivity…
Random-cluster representation of the Blume-Capel model
B. T. Graham, G. R. Grimmett
The so-called diluted-random-cluster model may be viewed as a random-cluster representation of the Blume--Capel model. It has three parameters, a vertex parameter , an edge para…
Effect of Reconnection Probability on Cosmic (Super)string Network Density
A. Avgoustidis, E. P. S. Shellard
We perform numerical simulations of cosmic string evolution with intercommuting probability in the range , both in the matter and radiation eras, usi…
On the Robustness of Cool Disc Components in Bright ULXs
J. M. Miller, A. C. Fabian, M. C. Miller
In this letter, we comment on the robustness of putative cool (kT ~ 0.2 keV) accretion disc components in the X-ray spectra of the most luminous (L ~ 10^40 erg/s) ultra-luminous X-…
Chandra X-ray Observations of Galaxies in an Off-Center Region of the Coma Cluster
A. E. Hornschemeier, B. Mobasher, D. M. Alexander +4
We have performed a pilot Chandra survey of an off-center region of the Coma cluster to explore the X-ray properties and Luminosity Function of normal galaxies. We present results…
Is it time for a science counterpart of the Benezet-Berman mathematics teaching experiment of the 1930's?
Sanjoy Mahajan, Richard R. Hake
Should teachers concentrate on critical thinking, estimation, measurement, and graphing rather than college-clone algorithmic physics in grades K--12? Thus far physics education re…
The red-shift effect and radiation decay on black hole spacetimes
Mihalis Dafermos, Igor Rodnianski
We consider solutions to the linear wave equation on a (maximally extended) Schwarzschild spacetime, assuming only that the solution decays suitably at spatial infinity on a comple…
Local Experiments See Cosmologically Varying Constants
Douglas J. Shaw, John D. Barrow
We describe a rigorous construction, using matched asymptotic expansions, which establishes under very general conditions that local terrestrial and solar-system experiments will m…
X-ray Spectroscopy of Cooling Clusters
J. R. Peterson, A. C. Fabian
We review the X-ray spectra of the cores of clusters of galaxies. Recent high resolution X-ray spectroscopic observations have demonstrated a severe deficit of emission at the lowe…
Solving the Fokker-Planck kinetic equation on a lattice
Daniele Moroni, Benjamin Rotenberg, Jean-Pierre Hansen +2
We propose a discrete lattice version of the Fokker-Planck kinetic equation along lines similar to the Lattice-Boltzmann scheme. Our work extends an earlier one-dimensional formula…
Neutron-loaded outflows in gamma-ray bursts
Elena M. Rossi, Andrei M. Beloborodov, Martin J. Rees
Relativistic neutron-loaded outflows in gamma-ray bursts are studied at their early stages, before deceleration by a surrounding medium. The outflow has four components: radiation,…
Addendum to "On the problem"
Stephan Baier
We prove that the conditions and in Theorems 3 and 4 of our recent paper "On the problem" can be omitted.
A "Square-root" Method for the Density Matrix and its Applications to Lindblad Operators
A. Yahalom, R. Englman
The evolution of open systems, subject to both Hamiltonian and dissipative forces, is studied by writing the element of the time () dependent density matrix in the form \be…
ADHM is Tachyon Condensation
Koji Hashimoto, Seiji Terashima
We completely realize the ADHM construction of instantons in D-brane language of tachyon condensations. Every step of the construction is given a physical interpretation in string…
Comments on an argument of Tegmark and Bostrom
Adrian Kent
Withdrawn -- a revised version will appear in due course.
On the recollision-free excitation of krypton during ultrafast multi-electron tunnel ionization
W A Bryan, S L Stebbings, J McKenna +7
The probability of multiple ionization of krypton by 50 femtosecond circularly polarized laser pulses, independent of the optical focal geometry, has been obtained for the first ti…
Dijet rates with symmetric cuts
A. Banfi
We discuss the physics underlying an all-order resummation of logarithmic enhanced contributions to dijet cross sections, and present preliminary results for the distribution in th…
A quantitative investigation into the accumulation of rounding errors in the numerical solution of ODEs
Sebastian Mosbach, Amanda G. Turner
We examine numerical rounding errors of some deterministic solvers for systems of ordinary differential equations (ODEs). We show that the accumulation of rounding errors results i…
Mixing of the RR and NSNS sectors in the BMN limit
Michael B. Green, Stefano Kovacs, Aninda Sinha
This paper concerns instanton contributions to two-point correlation functions of BMN operators in N=4 supersymmetric Yang-Mills that vanish in planar perturbation theory. Two-poin…
Celestial Mechanics, Conformal Structures, and Gravitational Waves
C. Duval, G. Gibbons, P. Horvathy
The equations of motion for non-relativistic particles attracting according to Newton's law are shown to correspond to the equations for null geodesics in a -dimensiona…