Low-Temperature Scaling Regime of Random Ferromagnetic-Antiferromagnetic Spin Chains

Using the Continuous Time Quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, and the specific heat of a spin-1/2 chain with random antiferromagnetic and ferromagnetic couplings, down to very low temperatures. Our data show a consistent scaling behavior in both quantities and support strongly the conjecture drawn from the approximative real-space renormalization group treatment. A statistical analysis scheme is developed which will be useful for the search scaling behavior in numerical and experimental data of random spin chains.Comment: 4 pages and 3 figure

2007 Press Release

2007 Women\u27s Tennis Press Release, George Fox University

R^4 Corrections to Eleven Dimensional Supergravity via Supersymmetry

By applying Noether method to N=1 local supersymmetry in eleven dimensions, we obtained two candidates of R^4 corrections to the supergravity. The bosonic parts of these two completely match with the results obtained by type IIA string perturbative calculations. We also obtained 13 parameters which relate only fermionic terms.Comment: 9 pages, no figure, note adde

SL(2,R)-invariant IIB Brane Actions

We give a universal SL(2,R)-invariant expression for all IIB p-brane actions with p=-1,1,3,5,7,9. The Wess-Zumino terms in the brane actions are determined by requiring (i) target space gauge invariance and (ii) the presence of a single Born-Infeld vector. We find that for p=7 (p=9) brane actions with these properties only exist for orbits that contain the standard D7-brane (D9-brane). We comment about the actions for the other orbits.Comment: 15 pages, additional references and remarks in subsection on 3-branes, accepted for publication in JHE

Diabetic Ketoacidosis

Diabetic ketoacidosis (DKA) is a major complication of diabetes mellitus (DM) and often the initial admitting diagnosis in type I diabetes diagnosis (Sharma, Kumar & Yadav, 2017). The purpose of this poster is to discuss the pathophysiology, risk factors, nursing implications signs and symptoms of DKA. The incidence of DKA has risen by 30% over the past decade, with more than 140,000 hospital admissions every year in the United States (Basam et al., 2017). DKA hospitalizations account for 2.4 billion dollars annually (Basam et al., 2017). DKA can be a life threating complication for any diabetic. As a future family nurse practitioner (FNP), managing patient’s diabetes is a crucial aspect in my future job prospects. The best treatment for DKA is prevention. As a FNP, close monitoring and education is crucial in the prevention of DKA. DKA being a major complication, understanding the etiology and pathophysiology is imperative in treatment and educating patients in prevention

Spinorial cohomology and maximally supersymmetric theories

Fields in supersymmetric gauge theories may be seen as elements in a spinorial cohomology. We elaborate on this subject, specialising to maximally supersymmetric theories, where the superspace Bianchi identities, after suitable conventional constraints are imposed, put the theories on shell. In these cases, the spinorial cohomologies describe in a unified manner gauge transformations, fields and possible deformations of the models, e.g. string-related corrections in an alpha' expansion. Explicit cohomologies are calculated for super-Yang-Mills theory in D=10, for the N=(2,0) tensor multiplet in D=6 and for supergravity in D=11, in the latter case from the point of view of both the super-vielbein and the super-3-form potential. The techniques may shed light on some questions concerning the alpha'-corrected effective theories, and result in better understanding of the role of the 3-form in D=11 supergravity.Comment: 23 pp, plain tex. v2: Minor changes, references adde