How research programs come apart: the example of supersymmetry and the disunity of physics

According to Peter Galison, the coordination of different ``subcultures'' within a scientific field happens through local exchanges within ``trading zones''. In his view, the workability of such trading zones is not guaranteed, and science is not necessarily driven towards further integration. In this paper, we develop and apply quantitative methods (using semantic, authorship, and citation data from scientific literature), inspired by Galison's framework, to the case of the disunity of high-energy physics. We give prominence to supersymmetry, a concept that has given rise to several major but distinct research programs in the field, such as the formulation of a consistent theory of quantum gravity or the search for new particles. We show that ``theory'' and `phenomenology'' in high-energy physics should be regarded as distinct theoretical subcultures, between which supersymmetry has helped sustain scientific ``trades''. However, as we demonstrate using a topic model, the phenomenological component of supersymmetry research has lost traction and the ability of supersymmetry to tie these subcultures together is now compromised. Our work supports that even fields with an initially strong sentiment of unity may eventually generate diverging research programs and demonstrates the fruitfulness of the notion of trading zones for informing quantitative approaches to scientific pluralism

Revisiting proton-proton fusion in chiral effective field theory

We calculate the $S$-factor for proton-proton fusion using chiral effective field theory interactions and currents. By performing order-by-order calculations with a variety of chiral interactions that are regularized and calibrated in different ways, we assess the uncertainty in the $S$-factor from the truncation of the effective field theory expansion and from the sensitivity of the $S$-factor to the short-distance axial current determined from three- and four-nucleon observables. We find that $S(0)=(4.100\pm0.019\mathrm{(syst)}\pm0.013\mathrm{(stat)}\pm0.008(g_A))\times10^{-23}~\mathrm{MeV\,fm}^2\,,$ where the three uncertainties arise, respectively, from the truncation of the effective field theory expansion, use of the two-nucleon axial current fit to few-nucleon observables and variation of the axial coupling constant within the recommended range. The increased value of $S(0)$ compared to previous calculations is mainly driven by an increase in the recommended value for the axial coupling constant and is in agreement with a recent analysis based on pionless effective field theory

GRK2 in the cardiovascular disease continuum: Role in hypertension and insulin resistence

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Biología Molecular: 09-04-201

Rebecca Pennington Leach and Andrea Elisa Leagans in Senior Recitals

This is the program for the senior voice recitals of soprano Rebecca Pennington Leach and mezzo-soprano Andrea Elisa Leagans held on October 26, 1995, in Mabee Fine Arts Center\u27s McBeth Recital Hall. Terri Lucas accompanied on piano

Síntesis electroquímica de nanopartículas de plata en presencia de un surfactante neutro

Muchas de las aplicaciones de las nanopartículas de platase encuentran en el área de la medicina como agentesantimicrobianos. Para evaluar la actividad antimicrobianade estos materiales, es importante garantizar que se encuentran estables y que los agentes estabilizantes seanbiocompatibles. Entre los métodos propuestos para lasíntesis de nanopartículas de plata se encuentran losmétodos electroquímicos, que han mostrado tener ventajasgracias a la facilidad para controlar las variables desíntesis. En el presente trabajo, se propone la síntesis denanopartículas de plata mediante un método electroquímicoen presencia del polímero Pluronic® F68. El materialobtenido fue caracterizado por UV-Vis, dispersión deluz dinámica y microscopía TEM. Se probó que las características morfológicas y de índice de polidispersidad del material mejoran cuando la síntesis se hace en presencia del surfactante

Similarities between Erwin Piscator procedures and acting dramaturgical creation processes

El artículo presenta un análisis de los procedimientos adoptados por el director alemán Erwin Piscator en los procesos adaptativos de las piezas Rasputín (1927) y Las Aventuras del Buen Soldado Schweik (1927) y los compara con algunos procesos de creación dramatúrgica contemporáneos. Los procedimientos utilizados por Erwin Piscator pueden ser considerados como precursores del proceso de creación dramatúrgica actoral desarrollado por actores contemporáneos, pero desde el punto de vista del director.This essay presents an analysis of the procedures adopted by the german director Erwin Piscator in the adaptive processes of the plays Rasputín (1927) and The Adventures of the Good Soldier Schweik (1927). Theprocedures employed by Erwin Piscator can be regarded as pioneers of the actor's dramaturgical creation processes developed by contemporaneous authors, but from the director's viewpoint