Monopoles at Finite Volume and Temperature in SU(2) Lattice Gauge Theory

We resolve a discrepancy between the SU(2) spacial string tension at finite temperature, and the value obtained by monopoles in the maximum Abelian gauge. Previous work had incorrectly omitted a term due to Dirac sheets. When this term is included, the monopole and full SU(2) determinations of the spacial string tension agree to within the statistical errors of the monopole calculation.Comment: 8 pages, Latex files: msum.tex,msum.aux packaged with uufile

The Maximal Abelian Gauge, Monopoles, and Vortices in SU(3) Lattice Gauge Theory

We report on calculations of the heavy quark potential in SU(3) lattice gauge theory. Full SU(3) results are compared to three cases which involve gauge-fixing and projection. All of these start from the maximal abelian gauge (MAG), in its simplest form. The first case is abelian projection to U(1)xU(1). The second keeps only the abelian fields of monopoles in the MAG. The third involves an additional gauge-fixing to the indirect maximal center gauge (IMCG), followed by center projection to Z(3). At one gauge fixing/configuration, the string tensions calculated from MAG U(1)xU(1), MAG monopoles, and IMCG Z(3) are all less than the full SU(3) string tension. The projected string tensions further decrease, by approximately 10%, when account is taken of gauge ambiguities. Comparison is made with corresponding results for SU(2). It is emphasized that the formulation of the MAG is more subtle for SU(3) than for SU(2), and that the low string tensions may be caused by the simple MAG form used. A generalized MAG for SU(3) is formulated.Comment: 22 pages, latex, 2 postscript figures. Replaced version has added data at beta=6.0, analysis of Gribov ambiguities, extended tables of results, discussion of scalin

Monopoles contra vortices in SU(2) lattice gauge theory?

We show that the scenario of vortex induced confinement of center--projected SU(2) lattice gauge theory is not necessarily in conflict with the findings in the positive plaquette model.Comment: 3 pages, LaTeX, comment to be published in Phys. Rev.

Magnetic Monopoles as Agents of Chiral Symmetry Breaking in U(1) Lattice Gauge Theory

We present results suggesting that magnetic monopoles can account for chiral symmetry breaking in abelian gauge theory. Full U(1) configurations from a lattice simulation are factorized into magnetic monopole and photon contributions. The expectation is computed using the monopole configurations and compared to results for the full U(1) configurations. It is shown that excellent agreement between the two values of is obtained if the effect of photons, which "dress" the composite operator psibarpsi, is included. This can be estimated independently by measurements of the physical fermion mass in the photon background.Comment: 14 pages REVTeX, including 5 figure

STUDENT ENGAGEMENT, EXPERIENCE, & SUPPORT AMONG PRE-PHARMACY STUDENTS

This study was guided by Astin’s Student Involvement theory which explored student’s needs in a demanding program amongst 12 pre-pharmacy students at the University of the Pacific. This qualitative study looked to uncover the engagement, experiences, and support of pre-pharmacy students in order to learn what students want from their learning experiences; to aid in student success and retention. Qualitative interviews provided detailed stories to their pre-pharmacy experiences. Through a thorough analysis of the data seven themes emerged: (a) peer support (b) time management (c) exam structure (d) increased faculty support (e) housing placement (f) coping with stress (g) core classes. Students who were interviewed often-mentioned that their peers, who once were in situations similar to those that they found themselves in, helped them stay in the program. Many of the students had mentioned the importance of time management in a pre-pharmacy course. The students also mentioned that they had exams back-to-back, and it was a challenge for many of them to be prepared for all of them. The faculty has been associated with student success, and their being available for the students is important in fostering better outcomes for students. Learning how students are impacted by their housing experiences is important to understand because it connects to their classroom behaviors. Coping with stress was mentioned through many themes, and the ability of the students to deal with that stress was important to their success. It was important to understand what the students find useful from their non-science courses to learn what they desire from their learning experiences. The results from this study provide improvements to the students experiences and needs. The recommendations include the University of the Pacific adjusting the current curriculum when they are developing their exam schedules. Adding a course that aids in support for students focusing on time management, and as well preparation for students to encourage their school and social life balance. Having faculty available after class Q&A and providing online or in-person office hour sessions will aid in the student\u27s success. This will allow flexibility for interactions between faculty and students. Housing facilities should have more late-night study areas, like in the Chan Hall Apartments that the PharmD students currently have. There should also be housing placements that are specifically designated for STEM students

Advanced passive communication satellite systems comparison studies. Volume 1 - Summary Final report

Passive communication satellites feasibility for Comsat system - Vol.

Predicted and hot-film measured Tollmien-Schlichting wave characteristics

The Tollmien-Schlichting (TS) instability is a time-dependence instability which can lead to transition of laminar boundary layers on airfoils. A comparison of theoretical predictions and experimental observations of the TS instability on the NLF(1)-0414F airfoil designed by Viken and Pfenninger. The theoretical predictions were obtained using the SALLY stability code. Test results, from the same hot films that were used to detect transition, revealed that TS waves could be detected by the hot films if the hot-film signal was adequately modified