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80 papers · 1 filter
Degenerate Maxima in Hamiltonian Systems
Mike Chance
In this paper we explore loops of non-autonomous Hamiltonian diffeomorphisms with degenerate fixed maxima. We show that such loops can not have totally degenerate fixed global maxi…
Multiwavelength Observations of the Runaway Binary HD 15137
M. Virginia McSwain, Michael De Becker, Mallory S. E. Roberts +6
HD 15137 is an intriguing runaway O-type binary system that offers a rare opportunity to explore the mechanism by which it was ejected from the open cluster of its birth. Here we p…
Observational constraints on Horava-Lifshitz cosmology
Sourish Dutta, Emmanuel N. Saridakis
We use observational data from Type Ia Supernovae (SNIa), Baryon Acoustic Oscillations (BAO), and Cosmic Microwave Background (CMB), along with requirements of Big Bang Nucleosynth…
Nonequilibrium Dynamics in Noncommutative Spacetime
Chong-Sun Chu, Chiu Man Ho
We study the effects of spacetime noncommutativity on the nonequilibrium dynamics of particles in a thermal bath. We show that the noncommutative thermal bath does not suffer from…
Duality, Tangential Interpolation, and Toeplitz Corona Problems
Mrinal Raghupathi, Brett D. Wick
In this paper we extend a method of Arveson and McCullough to prove a tangential interpolation theorem for subalgebras of . This tangential interpolation result implies a…
Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at sqrt(s)=200 GeV
PHENIX Collaboration, A. Adare
We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p+p collisions at sqrt(s)=200 GeV performed by the PHENIX Experiment at RHIC. The…
Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV and implications for direct photon production
PHENIX Collaboration, A. Adare
PHENIX has measured the e^+e^- pair continuum in sqrt(s_NN)=200 GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. The e^+e^- yield is compared to the e…
Positron scattering and annihilation from the hydrogen molecule at zero energy
J. -Y. Zhang, J. Mitroy, K. Varga
The confined variational method is used to generate a basis of correlated gaussians to describe the interaction region wave function for positron scattering from the H molecule…
Convergent Interpolation to Cauchy Integrals over Analytic Arcs with Jacobi-Type Weights
Laurent Baratchart, Maxim Yattselev
We design convergent multipoint Pade interpolation schemes to Cauchy transforms of non-vanishing complex densities with respect to Jacobi-type weights on analytic arcs, under mild…
Orientable embeddings and orientable cycle double covers of projective-planar graphs
M. N. Ellingham, Xiaoya Zha
In a closed 2-cell embedding of a graph each face is homeomorphic to an open disk and is bounded by a cycle in the graph. The Orientable Strong Embedding Conjecture says that every…
Subaru FOCAS Spectroscopic Observations of High-Redshift Supernovae
Tomoki Morokuma, Kouichi Tokita, Christopher Lidman +30
We present spectra of high-redshift supernovae (SNe) that were taken with the Subaru low resolution optical spectrograph, FOCAS. These SNe were found in SN surveys with Suprime-Cam…
On the degree of rapid decay
Bogdan Nica
A finitely generated group $\G$ equipped with a word-length is said to satisfy property RD if there are such that, for all non-negative integers , we have $\|a\|\le…
Liquid-gas phase behavior of polydisperse dipolar hard-sphere fluid: Extended thermodynamic perturbation theory for central force associating potential
Yu. V. Kalyuzhnyi, S. Hlushak, P. T. Cummings
The liquid-gas phase diagram for polydisperse dipolar hard-sphere fluid with polydispersity in the hard-sphere size and dipolar moment is calculated using extension of the recently…
Surface Spline Approximation on SO(3)
Thomas Hangelbroek, Dominik Schmid
The purpose of this article is to introduce a new class of kernels on SO(3) for approximation and interpolation, and to estimate the approximation power of the associated spaces. T…
The Penalized Lebesgue Constant for Surface Spline Interpolation
Thomas Hangelbroek
Problems involving approximation from scattered data where data is arranged quasi-uniformly have been treated by RBF methods for decades. Treating data with spatially varying densi…
Finding a sun in building-free graphs
Elaine M. Eschen, Chinh T. Hoang, Jeremy P. Spinrad +1
Deciding whether an arbitrary graph contains a sun was recently shown to be NP-complete. We show that whether a building-free graph contains a sun can be decided in O(min$\{m{n^3},…
Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV
PHENIX Collaboration
It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in…
Toward solving the cosmological constant problem by embedding
Roman V. Buniy, Thomas W. Kephart
The typical scalar field theory has a cosmological constant problem. We propose a generic mechanism by which this problem is avoided at tree level by embedding the theory into a la…
Modulated pair condensate of p-orbital ultracold fermions
Zixu Zhang, Hsiang-Hsuan Hung, Chiu Man Ho +2
We show that an interesting of pairing occurs for spin-imbalanced Fermi gases under a specific experimental condition---the spin up and spin down Fermi levels lying within the $p_x…
The masses and radii of HD186753B and TYC7096-222-1B: the discovery of two M-dwarfs that eclipse A-type stars
S. J. Bentley, B. Smalley, P. F. L. Maxted +10
We present observations of two new single-lined eclipsing binaries, both consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search for Planets transit photometry…
On normal subgroups of an amalgamated product of groups with applications to knot theory
John G. Ratcliffe
In this paper, we give some necessary and sufficient conditions for a normal subgroup of an amalgamated product of groups to be finitely generated. We apply these conditions togeth…
Unparticle dark energy
De-Chang Dai, Sourish Dutta, Dejan Stojkovic
We examine a dark energy model where a scalar unparticle degree of freedom plays the role of quintessence. In particular, we study a model where the unparticle degree of freedom ha…
Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. III. The "Wide" L3.5/L4 Dwarf Binary 2MASS J15500845+1455180AB
Adam J. Burgasser, Saurav Dhital, Andrew West
We report the identification of 2MASS J15500845+1455180 as a 0"9 L dwarf visual binary. This source is resolved in Sloan Digital Sky Survey (SDSS) images and in near-infrared imagi…
Microscopic Calculation of Pre-Compound Excitation Energies for Heavy-Ion Collisions
A. S. Umar, V. E. Oberacker, J. A. Maruhn +1
We introduce a microscopic approach for calculating the excitation energies of systems formed during heavy-ion collisions. The method is based on time-dependent Hartree-Fock (TDHF)…