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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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71 papers · 1 filter
Magnetic Interactions of D-branes and Wess-Zumino Terms in Super Yang-Mills Effective Actions
A. A. Tseytlin, K. Zarembo
There is a close relation between classical supergravity and quantum SYM descriptions of interactions between separated branes. In the case of D3 branes, the equivalence of leading…
Quantum fluctuations of Wilson loops from string models
Y. Kinar, E. Schreiber, J. Sonnenschein +1
We discuss the impact of quadratic quantum fluctuations on the Wilson loop extracted from classical string theory. We show that a large class of models, which includes the near hor…
Genus Zero Actions on Riemann Surfaces
Sadok Kallel, Denis Sjerve
In this paper we determine all finite groups G that can act on some compact Riemann surface M with the property that if H is any non-trivial subgroup of G, then the orbit surface M…
How exactly did the Universe become neutral?
Sara Seager, Dimitar D. Sasselov, Douglas Scott
We present a refined treatment of H, He I, and He II recombination in the early Universe. The difference from previous calculations is that we use multi-level atoms and evolve the…
The AdS/CFT Correspondence Conjecture and Topological Censorship
G. Galloway, K. Schleich, D. Witt +1
In gr-qc/9902061 it was shown that (n+1)-dimensional asymptotically anti-de-Sitter spacetimes obeying natural causality conditions exhibit topological censorship. We use this fact…
Extremal Curves in 2+1-Dimensional Yang-Mills Theory
Peter Orland, Gordon W. Semenoff
We examine the structure of the potential energy of 2+1-dimensional Yang-Mills theory on a torus with gauge group SU(2). We use a standard definition of distance on the space of ga…
Effective "Penetration Depth" in the Vortex State of a d-wave Superconductor
M. H. S. Amin, M. Franz, Ian Affleck
The temperature and field dependence of the effective magnetic penetration depth in the vortex state of a d-wave superconductor, as measured by muon spin rotation experiments, is c…
Near-IR adaptive optics imaging of nuclear spiral structure in the Seyfert galaxy, NGC3227
Scott C. Chapman, Simon L. Morris, Gordon A. H. Walker
We present high spatial resolution, near-IR images in J, H, K of the nucleus of NGC3227, obtained with the Adaptive Optics bonnette on CFHT. The ~0.15 arcsec (17pc) resolution allo…
Coalescence of skew Brownian motions
Martin Barlow, Krzysztof Burdzy, Haya Kaspi +1
We prove that two skew Brownian motions with the same skewness parameter (different from 0) and driven by the same Brownian motion coalesce a.s.
Static Potential in N=4 Supersymmetric Yang-Mills Theory
J. K. Erickson, G. W. Semenoff, R. J. Szabo +1
We compute the leading order perturbative correction to the static potential in supersymmetric Yang-Mills theory. We show that the perturbative expansion contains infr…
Non-Invariant Ground States, Thermal Average, and generalized Fermionic Statistics
Roberto Mignani, Roberto Scipioni
We present an approach to generalised fermionic statistics which relates the existence of a generalised statistical behaviour to non-invariant ground states. Considering the therma…
Phase diagram of a 1 dimensional spin-orbital model
Chigak Itoi, Shaojin Qin, Ian Affleck
We study a 1 dimensional spin-orbital model using both analytical and numerical methods. Renormalization group calculations are performed in the vicinity of a special integrable po…
Measurement of the W+W-gamma Cross-section and First direct Limits on Anomalous Electroweak Quartic Gauge Couplings
The OPAL collaboration, G. Abbiendi
A study of W+W- events accompanied by hard photon radiation produced in e+e- collisions at LEP is presented. Events consistent with two on-shell W-bosons and an isolated photon are…
Giant Peak Effect Observed in Ultrapure YBCO Crystal
Jing Shi, X. S. Ling, Ruixing Liang +2
A giant peak in the temperature dependence of the screening current is observed in the ac magnetic response of an ultra-pure YBaCuO crystal in a magnetic field. A…
A Compact 3H(p,gamma)4He 19.8-MeV Gamma-Ray Source for Energy Calibration at the Sudbury Neutrino Observatory
A. W. P. Poon, R. J. Komar, C. E. Waltham +4
The Sudbury Neutrino Observatory (SNO) is a new 1000-tonne D2O Cerenkov solar neutrino detector. A high energy gamma-ray source is needed to calibrate SNO beyond the 8B solar neutr…
Can Induced Theta Vacua be Created in Heavy Ion Collisions?
K. Buckley, T. Fugleberg, A. Zhitnitsky
The development of the early Universe is a remarkable laboratory for the study of most nontrivial properties of particle physics. What is more remarkable is the fact that these phe…
First detections of FIRBACK sources with SCUBA
Douglas Scott, Guilaine Lagache, Colin Borys +10
The FIRBACK (Far InfraRed BACKground) survey represents the deepest extensive 170 micron images obtained by the ISO satellite. The sources detected comprise about 10% of the Cosmic…
A New Calculation of the Recombination Epoch
Sara Seager, Dimitar D. Sasselov, Douglas Scott
We have developed an improved recombination calculation of H, HeI, and HeII in the early Universe which involves a line-by-line treatment of each atomic level. We find two major di…
On the extension of the Obukhov theorem in non-Riemannian gravity I
Roberto Scipioni
This is a first paper of a series in which we give some generalizations of the Obukhov theorem in the Tucker-Wang approach to Metric- Affine gravity in which we consider more gener…
Realizing holonomic constraints in classical and quantum mechanics
Richard Froese, Ira Herbst
We consider the problem of constraining a particle to a submanifold Sigma of configuration space using a sequence of increasing potentials. We compare the classical and quantum ver…
An Asymptotic Formula for the Number of Smooth Values of a Polynomial
Greg Martin
Although we expect to find many smooth numbers (i.e., numbers with no large prime factors) among the values taken by a polynomial with integer coefficients, it is unclear what the…
Finite size spectrum, magnon interactions and magnetization of S=1 Heisenberg spin chains
Jizhong Lou, Shaojin Qin, Tai-Kai Ng +2
We report our density matrix renormalization-group and analytical work on S=1 antiferromagnetic Heisenberg spin chains. We study the finite size behavior within the framework of th…
A search for the submillimetre counterparts to Lyman break galaxies
Scott C. Chapman, Douglas Scott, Charles C. Steidel +7
We have carried out targetted sub-mm observations as part of a programme to explore the connection between the rest-frame UV and far-IR properties of star-forming galaxies at high…
Isochrones and Luminosity Functions for Old White Dwarfs
Harvey B. Richer, Brad Hansen, Marco Limongi +3
Using a new grid of models of cooling white dwarfs, we calculate isochrones and luminosity functions in the Johnson-Kron/Cousins and HST filter sets for systems containing old whit…