Confronting race and racism : social identity in African American gay men

This qualitative study examines how race and racism function in gay communities, looking at factors facing African American gay men in their identity formation and daily experience. Specifically, this study has examined the presence of sexual racism, sexualized racial stereotypes that affect the way men of color are viewed by white gay men. Twelve self-identified African American gay men living in the Boston metropolitan area were recruited by word-of-mouth and snowball sampling. Drawing on existing areas of research, each participant was administered a demographic survey and interviewed about his experiences within predominately white middle-class mainstream gay communities. African American gay men, often considered to be cultural outlaws by both Gay and African American communities, are subjected to sexual and traditional racism, and may be made to feel ignored or excluded from mainstream Lesbian Gay Bisexual and Transgender (LGBT) community events and spaces. In addition to stating their challenges, the study attempts to highlight these men\u27s strength and resiliency. With little previously existing qualitative data from gay men of color, this study provides a foundation for future research, building a knowledge base on this marginalized population, increasing cultural competence to promote more effective outreach to and inclusion of a diverse client base in clinical services and health care, and raising questions about the ways race is constructed and used in a variety of contexts

A covariant regulator for entanglement entropy: proofs of the Bekenstein bound and QNEC

While von Neumann entropies for subregions in quantum field theory universally contain ultraviolet divergences, differences between von Neumann entropies are finite and well-defined in many physically relevant scenarios. We demonstrate that such a notion of entropy differences can be rigorously defined in quantum field theory in a general curved spacetime by introducing a novel, covariant regulator for the entropy based on the modular crossed product. This regulator associates a type II von Neumann algebra to each spacetime subregion, resulting in well-defined renormalized entropies. This prescription reproduces formulas for entropy differences that coincide with heuristic formulas widely used in the literature, and we prove that it satisfies desirable properties such as unitary invariance and concavity. As an application, we provide proofs of the Bekenstein bound and the quantum null energy condition, formulated directly in terms of vacuum-subtracted von Neumann entropies.Comment: 6 pages + appendices, 2 figure

Entanglement Hamiltonians in 1D free lattice models after a global quantum quench

We study the temporal evolution of the entanglement Hamiltonian of an interval after a global quantum quench in free lattice models in one spatial dimension. In a harmonic chain we explore a quench of the frequency parameter. In a chain of free fermions at half filling we consider the evolution of the ground state of a fully dimerised chain through the homogeneous Hamiltonian. We focus on critical evolution Hamiltonians. The temporal evolutions of the gaps in the entanglement spectrum are analysed. The entanglement Hamiltonians in these models are characterised by matrices that provide also contours for the entanglement entropies. The temporal evolution of these contours for the entanglement entropy is studied, also by employing existing conformal field theory results for the semi-infinite line and the quasi-particle picture for the global quench

Tribulin in post-traumatic stress disorder

Tribulin (endogenous monoamine oxidase inhibitor/benzodiazepine receptor binding inhibitor) output was measured in the urine of 18 patients with post-traumatic stress disorder (PTSD) and 13 controls. The level of the two inhibitory activities was highly significantly correlated in the group as a whole. There was no difference between output of either inhibitor in patients and controls. However, when the PTSD group was subdivided according to various psychometric ratings, a pattern of output did emerge. Levels of both inhibitory activities were higher in agitated compared with non-agitated subjects, and lower in extroverts compared with introverts. This finding supports the view that tribulin output is raised in conditions of greater arousal

The corticotropin-releasing hormone test in patients with posttraumatic stress disorder

To evaluate the hypothalamic—pituitary-adrenal (HPA) axis in patients with posttraumatic stress disorder (PTSD), we measured adrenocorticotropin hormone (ACTH) and cortisol responses following administration of corticotropin-releasing hormone (CRH) in 8 combat veterans with chronic PTSD. The PTSD patients had a significantly lower ACTH response to CRH compared to a control group of normal volunteers. Blunted ACTH responses occurred in patients with PTSD alone, as well as those PTSD patients who also had major depression. The cortisol response, although reduced, was not significantly different from normal. The blunted ACTH response to CRH in PTSD patients is similar to that seen in other psychiatric disorders, such as depression, panic disorder, and anorexia nervosa

A guide to guidelines for the treatment of PTSD and related conditions

In recent years, several practice guidelines have appeared to inform clinical work in the assessment and treatment of posttraumatic stress disorder. Although there is a high level of consensus across these documents, there are also areas of apparent difference that may lead to confusion among those to whom the guidelines are targeted—providers, consumers, and purchasers of mental health services for people affected by trauma. The authors have been responsible for developing guidelines across three continents (North America, Europe, and Australia). The aim of this article is to examine the various guidelines and to compare and contrast their methodologies and recommendations to aid clinicians in making decisions about their use