Browsing Ohio State University Research and Scholarship by Title
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Baryon Dynamics, Dark Matter Substructure, and Galaxies
Weinberg, David H.; Colombi, Stephane; Davé, Romeel; Katz, Neal ( 20080501 )By comparing a collisionless cosmological Nbody simulation (DM) to a smoothed particle hydrodynamics simulation (SPH) with the same initial conditions, we investigate the correspondence between dark matter subhalos produced ... 
The battles in Miami: the fall of the FTAA/ALCA and the promise of transnational movements
Wainwright, Joel; Ortiz, Rafael ( 2006 )In November 2003 thousands of demonstrators staged protests in the streets of Miami while trade ministers from across the hemisphere met for the Eighth Ministerial of the Free Trade Area of the Americas (FTAA). Accounts ... 
BCSBEC crossover at T=0: A dynamical meanfield theory approach
Garg, Arti; Krishnamurthy, H. R.; Randeria, Mohit ( 20050713 )We study the T=0 crossover from the BCS superconductivity to BoseEinstein condensation in the attractive Hubbard Model within dynamical mean field theory (DMFT) in order to examine the validity of HartreeFockBogoliubov ... 
BCSBEC crossover with unequalmass fermions
Diener, Roberto B.; Randeria, Mohit ( 20100315 )We investigate the crossover from BCS pairing to molecular BoseEinstein condensation (BEC) in an atomic gas with two fermion species with masses m↑≠m↓ tuned through a Feshbach resonance. We present results for the T=0 ... 
Beta Blockers in Mental Retardation and Developmental Disorders
Arnold, L. Eugene; Aman, Michael G. ( 1991 )βAdrenergic blockers appear to be effective in the management of verbal aggression, physical aggression, or selfinjurious behavior associated with mental retardation and other developmental disorders. However, ... 
Biased Estimates of Ω_m from Comparing Smoothed Predicted Velocity Fields to Unsmoothed PeculiarVelocity Measurements
Berlind, Andreas A.; Narayanan, Vijay K.; Weinberg, David H. ( 20000710 )We show that a regression of unsmoothed peculiar velocity measurements against peculiar velocities predicted from a smoothed galaxy density field leads to a biased estimate of the cosmological density parameter Ω_m, even ... 
Big bang nucleosynthesis constraints on the selfgravity of pressure
Rappaport, Saul; Schwab, Josiah; Burles, Scott; Steigman, Gary ( 20080116 )Using big bang nucleosynthesis and present, highprecision measurements of light element abundances, we constrain the selfgravity of radiation pressure in the early universe. The selfgravity of pressure is strictly ... 
Biofilm accumulation and structure in the flow path of drip emitters using reclaimed wastewater
Yan, D.; Yang, P.; Rowan, M.; Ren, S.; Pitts, D. ( 201005 )Biofouling has been identified as a major contributor to emitter clogging in drip irrigation systems that distribute reclaimed wastewater. Two types of drip emitters were evaluated for use with reclaimed wastewater. Microbial ... 
A blackbox group algorithm for recognizing finite symmetric and alternating groups, I
Beals, Robert; LeedhamGreen, Charles R.; Niemeyer, Alice C.; Praeger, Cheryl E.; Seress, Ákos ( 2003 )We present a Las Vegas algorithm which, for a given blackbox group known to be isomorphic to a symmetric or alternating group, produces an explicit isomorphism with the standard permutation representation of the group. ... 
Block diagonalization using similarity renormalization group flow equations
Anderson, E.; Bogner, S. K.; Furnstahl, R. J.; Jurgenson, E. D.; Perry, R. J.; Schwenk, A. ( 20080324 )By choosing appropriate generators for the Similarity Renormalization Group (SRG) flow equations, different patterns of decoupling in a Hamiltonian can be achieved. Sharp and smooth blockdiagonal forms of phaseshift ... 
Borel subrings of the reals
Edgar, G. A.; Miller, Chris ( 2003 )A Borel (or even analytic) subring of R either has Hausdorff dimension 0 or is all of R. Extensions of the method of proof yield (among other things) that any analytic subring of C having positive Hausdorff dimension is ... 
Breakdown of the quasistatic approximation at high densities and its effect on the heliumlike Kα complex of nickel, iron, and calcium
Oelgoetz, Justin; Fontes, Christopher J.; Zhang, Hong Lin; Pradhan, Anil K. ( 20071212 )Recent work to include Rmatrix data within a larger model comprised mostly of distortedwave and planewave Born data has resulted in the general spectral modeling (GSM) code. It employs a quasistatic approximation, a ... 
A brief history of the classification of the finite simple groups
Solomon, Ronald ( 2001 )We present some highlights of the 110year project to classify the finite simple groups. 
Broad Emissionline Variability in Markarian 335
Kassebaum, Tina M.; Peterson, Bradley M.; Wanders, Ignaz; Pogge, Richard W.; Bertram, Ray; Wagner, R. Mark ( 19970120 )We present the results of 6 years of spectroscopic monitoring of the Seyfert 1 galaxy Mrk 335. Each year, the observations span 57 months at a nominal sampling rate of one observation per week. Analysis of the spectroscopic ... 
A Bt transgene reduces herbivory and enhances fecundity in wild sunflowers
Snow, A. A.; Pilson, D.; Rieseberg, L. H.; Paulsen, M. J.; Pleskac, N.; Reagon, M. R.; Wolf, D. E.; Selbo, S. M. ( 200304 )Gene flow from transgenic crops can introduce novel traits into related species, but the ecological importance of this process is unknown. Here, we report the first empirical evidence that wild plants can benefit from a ... 
Cadmium measurements in coral skeleton using isotope dilutioninductively coupled plasmamass spectrometry
Matthews, K. A.; McDonough, W.; Grottoli, A. G. ( 20061125 )Here a method for the precise analysis of Cd/Ca in coral skeleton using inductively coupled plasma mass spectrometry (ICPMS) is presented. Isotope dilution and gravimetric standards with internal standardization were ... 
Caffeine Versus Methylphenidate and dAmphetamine in Minimal Brain Dysfunction: A DoubleBlind Comparison
Huestis, Robert D.; Arnold, L. Eugene; Smeltzer, Donald J. ( 1975 )The authors compared the efficacy of caffeine, methylphenidate, and damphetamine in children with minimal brain dysfunction using a doubleblind crossover design. The slight improvement with caffeine was not significantly ... 
Calculating expected DNA remnants from ancient founding events in human population genetics
Stacey, Andrew; Sheffield, Nathan C.; Crandall, Keith A. ( 20081017 )Background: Recent advancements in sequencing and computational technologies have led to rapid generation and analysis of high quality genetic data. Such genetic data have achieved wide acceptance in studies of historic ... 
Calculations on the Formation Rates and Mechanisms for C_n H Anions in Interstellar and Circumstellar Media
Herbst, Eric; Osamura, Yoshihiro ( 200806 )The rate coefficients for the radiative attachment reactions between the radicals C_n H (n = 28) and electrons have been calculated with the aid of quantum chemistry using a phasespace theory in which strong coupling ... 
Can Correlations Drive a Band Insulator Metallic?
Garg, Arti; Krishnamurthy, H. R.; Randeria, Mohit ( 20060726 )We analyze the effects of the onsite Coulomb repulsion U on a band insulator using dynamical mean field theory (DMFT). We find the surprising result that the gap is suppressed to zero at a critical U_c1 and remains zero ...