Exploring many-body localization in quantum systems coupled to an environment via Wegner-Wilson flows

Inspired by recent experiments on many-body localized systems coupled to an environment, we apply a Flow Equation method to study the problem of a disorder chain of spinless fermions, coupled via density-density interactions to a second clean chain of spinless fermions. In particular, we focus on the conditions for the onset of a many-body localized phase in the clean sector of our model by proximity to the dirty one. We find that a many-body localization proximity effect in the clean component is established when the density of dirty fermions exceeds a threshold value. From the flow equation method we find that, similar to many-body localization in a single chain, the many-body localization proximity effect is also described by an extensive set of local integrals of motion. Furthermore, by tuning the geometry of the inter-chain couplings, we show that the dynamics of the model is ruled, on intermediate time scales, by an emergent set of quasi-conserved charges.Comment: 22 pages, 7 figure

Laptop Versus Longhand Note Taking in a Professional Doctorate Course: Student Performance, Attitudes, and Behaviors

Objective: To determine the relationship between longhand note taking versus laptop note taking on pharmacy students’ examination performance and identify differences in attitudes and behaviors as it relates to the note taking process. Methods: A small group of students consented voluntarily to take longhand notes, doing away with their laptops during portions of the course administered by study investigators. Analyses were conducted on block examination performance, with each student’s score on the first examination serving as a performance benchmark to assess change. Laptop and longhand note takers completed a survey regarding various aspects of their note taking attitudes and behaviors, and also included open text comments to capture qualitative experiential data. Results: Based upon a relatively small number of participants in the longhand cohort (n=11), the differences between the groups on subsequent examinations was approximately 3.5 percentage points in favor of the longhand note-takers. There were significant differences observed between the two groups on several survey items, with longhand note takers less likely to be distracted in class and more likely to agree that other students ask to review their notes due to the quality of those notes. Conclusions: Longhand note taking might facilitate more accurate recall or retrieval in test situations, thus producing improved test scores for certain types of students in certain types of courses; however additional research is needed. Faculty may consider whether modifying students’ classroom note taking practices may contribute to an improved learning experience

Voting for the winning party makes people happier with democracy, especially if the winning party is highly preferred

It is well established that voters are more likely to think highly of their political systems when they produce the outcomes that they wish to see, but what of those voters who, for a number of reasons, do not vote for their favoured party? Shane Singh shows that these voters are less likely to share in this satisfaction, owing to a number of factors including the policies and political outcomes that may result from the victory of a less favoured party

Benzylammonium 2,4-bis(dicyanomethylene)-2,3-dihydroisoindolide

The cation and anion of the title salt, C⁷H₁₀N⁺.C₁₄H₄N₅-, are both bisected by a crystallographic mirror plane. Extensive hydrogen bonding, with the R₆⁶(28) graph-set motif, connects the ions into layers

Influence of Dapagliflozin on dietary mediated physiological and behavioral changes, The

2019 Spring.Includes bibliographical references.The diabetes medication, Dapagliflozin, is a sodium-glucose co-transporter 2 (SGLT2) inhibitor. The mechanism of action is decreasing renal absorption of glucose, leading to glucosuria, and modest weight loss. We hypothesized that SGLT2 inhibition would potentiate the favorable influence of dietary counseling on body composition and physiological adaptations in overweight or obese adults. Fifty sedentary overweight/obese men (n = 12) and women (n = 38) were randomly assigned to 12 weeks of dietary counseling for weight loss, supplemented with daily ingestion of either placebo or Dapagliflozin (up to 10 mg/day); coded as Pill A and Pill B. Dietary counseling consisted of weekly, one-on-one, 30-minute meetings targeting modest calorie restriction. Before and after treatment, body composition, resting metabolic rate (RMR), insulin sensitivity, appetite and satiety were measured. Twelve weeks of dietary counseling decreased (P 0.264). Dietary counseling also decreased lean mass (treatment main effect: P 0.055). Overall, 12-weeks of dietary counseling leads to favorable modification of body mass and fat mass regardless of pill assignment. However, Pill A appears to reduce the dietary counseling mediated loss in lean mass. Except for lean mass, the effects of dietary counseling for weight loss were not influenced by SGLT2 inhibition

Concurrent Sessions - Millennial Combat Veterans: How Identity Shapes Experience in College

This session is intended to be a dynamic, informative presentation/conversation with attendees and the researcher, reporting out the study results, sharing best practices and communicating recommendations for future practice in higher education related to the support, persistence and success of student veterans