Chiral pions in a magnetic background

We investigate the modification of the pion self-energy at finite temperature due to its interaction with a low-density, isospin-symmetric nuclear medium embedded in a constant magnetic background. To one loop, for fixed temperature and density, we find that the pion effective mass increases with the magnetic field. For the $\pi^{-}$, interestingly, this happens solely due to the trivial Landau quantization shift $\sim |eB|$, since the real part of the self-energy is negative in this case. In a scenario in which other charged particle species are present and undergo an analogous trivial shift, the relevant behavior of the effective mass might be determined essentially by the real part of the self-energy. In this case, we find that the pion mass decreases by $\sim 10$ for a magnetic field $|eB|\sim m_\pi^2$, which favors pion condensation at high density and low temperatures.Comment: 7 pages, 5 figure

People of immigrant and refugee background sharing experiences of mental health recovery: reflections and recommendations on using digital storytelling

Ten individuals of immigrant or refugee background, who had experi- enced mental health or emotional issues, participated in an immersive workshop to create digital stories as part of a national multicultural men- tal health initiative. Known collectively as ‘Finding our way’, the stories combine the power of first-person narrative with digital technologies. Three years on, six workshop participants and two coordinators reflect on the project’s effects, and offer recommendations for conducting and evaluating similar projects in the future. Individuals experienced the proj- ect as personally empowering. The stories have been used to facilitate community and service-based conversations about diversity, mental health and recovery

Conceptions and expectations of mentoring relationships in a teacher education reform context

Peer reviewedPostprin

Recovering from mental illness and suicidal behaviour in a culturally diverse context: the use of digital storytelling in cross-cultural medical humanities and mental health

en people of immigrant and refugee background, with a lived experience of mental health or emotional issues, participated in a four-day digital storytelling workshop, to create a story that expressed something about their personal encounters with mental ill-health and recovery. As many other DST projects have done before, this project used the power of first-person narratives and provided an opportunity for ‘unheard voices to be heard’.The storytellers were supported to create their own accounts, share their experiences (in mainstream media, in policy and service settings, and for practitioner education), grow in self-confidence, and develop other capabilities.This chapter describes the DST process and discusses its impact from the perspective of the two project coordinators in consultation with six participants, five as storytellers and one support person. It also provides the perspective of a Mandarin-speaking participant in depth. The digital stories can be freely viewed at www.vtmh.org.au

Towards the development of ethics guidelines for visual psychology: a review of relevant visual research ethics guidelines

Visual research methods are increasingly popular within psychology and the social sciences. However, psychology has yet to develop its own specific ethics guidelines for visual research methods. Currently, psychologists undertaking visual and arts-based research draw on ethics guidelines developed by and for allied disciplines that have a more established tradition of visual research, such as visual anthropology and visual sociology. While many of the principles of existing ethics guidelines from allied disciplines are applicable to psychological projects, psychological research has a distinct focus and potential applications, which would benefit from the generation of a set of bespoke guidelines. These should reflect our discipline’s long standing commitment to ethical research practice, and critical stance towards the limitations of inflexible formalistic principles. This article reviews existing guidelines for visual research and provides recommendations for visual research ethics guidelines for psychology, including the importance of ‘staged’ consent, anonymity vs. identification, and an expanded field of consideration which may include participants as image producers and owners; the individuals captured in the images taken by participants or researchers; and the impact of the research on the eventual audiences for these images

An Interpretative Phenomenological Analysis (IPA) of the experiential perspectives of volunteer befrienders, pertaining to causes of suicidality and prevention

Background and Objectives: Suicide is the 2nd leading cause of death for people age 15 to 29 and is estimated to be responsible for 800,000 deaths, annually. With each death by suicide, there are approximately 20 attempted suicides. In the United Kingdom, suicide is the leading cause of death for men aged 20 to 35 and for women aged 35 to 49. The dominant research and preventative initiatives exist through a medical lens; a perspective that often receives criticism for not incorporating social and culturally relevant variables. To date, research into alternative methods of support for the suicidal is scarce. This study seeks to obtain information pertaining to suicidality from the perspective of volunteer befrienders at MayTree Respite Centre, a London-based charity known for offering non-medical support for the suicidal. The objectives of the study were to explore the common causal themes of suicidality, perspectives of the medical model approach to suicide, as well as the limitations and advantages of the MayTree model. Materials and Methods: Data was collected through 8 semi-structured individual interviews with MayTree Volunteers. The interviews were audio-recorded and subsequently transcribed verbatim. The transcripts were then analysed using Interpretative Phenomenological Analysis (IPA) approach. Results: A total of 4 superordinate themes emerged: suicide as a means through which to escape one’s problems; causal attributions of suicidality, which contained adverse life experiences, low self-concept, as well as isolation and not being heard; perceptions of the medical model, which included a reductionist correlation between biology and suicide, as well as stigma; limitations to the MayTree model, encapsulating their drug and alcohol policy, as well as duration of stay/follow-ups; and advantages to the MayTree model, reported as the benefits of be-friending and of a non-judgmental atmosphere. Conclusion: It was highlighted neither model could be deemed superior to the other, rather that these approaches would be more effective if greater collaboration was evident. Collaborative efforts do appear to be demonstrated by MayTree, through its recognition of the complexity of certain cases of suicidality, and professional care needed when this arises

Rotating hybrid compact stars

Starting from equations of state of nucleonic and color-superconducting quark matter and assuming a first-order phase transition between these, we construct an equation of state of stellar matter, which contains three phases: a nucleonic phase, as well as two-flavor and three-flavor color-superconducting phases of quarks. Static sequences of the corresponding hybrid stars include massive members with masses of $\sim 2 M_{\odot}$ and radii in the range of $13< R < 16$ km. We investigate the integral parameters of rapidly rotating stars and obtain evolutionary sequences that correspond to constant rest-mass stars spinning down by electromagnetic and gravitational radiation. Physically new transitional sequences are revealed that are distinguished by a phase transition from nucleonic to color-superconducting matter for some configurations that are located between the static and Keplerian limits. The snapshots of internal structure of the star, displaying the growth or shrinkage of superconducting volume as the star's spin changes, are displayed for constant rest mass stars. We further obtain evolutionary sequences of rotating supramassive compact stars and construct pre-collapse models that can be used as initial data to simulate a collapse of color-superconducting hybrid stars to a black hole.Comment: 9 pages, 9 figures; v2: minor improvements, matches published version, v3: corrected figure placemen

Piloting of a suicide first aid gatekeeper training (online) for children and young people in conflict affected areas in Syria

Suicide among internally displaced people remains an under-researched public health issue especially in conflict affected countries. Given the limited and sometimes inaccessible mental health services, there is a need for scalable evidence-based suicide prevention programmes that could be delivered by trained and supervised non-specialists. The Suicide First Aid Guidelines approach aims to support humanitarian workers who deal directly with children and families with the appropriate knowledge and skills to identify and support those at risk of suicide until they can access further specialized support services or until the crisis passes. This paper presents the findings of an online pilot training of 56 humanitarian workers from different sectors (e.g. Child Protection, Nutrition and Mental Health and Psychosocial Support) in conflict affected areas in Syria. The quantitative and qualitative evaluations were based on pre- and post-training questionnaires and revision journals completed between training sessions. Suggestions and examples provided in the journals and during the trainings were incorporated into the succeeding trainings. This was to contextualize and modify the gatekeeper training to fit the Syrian context and provide adaptations for future research and suicide prevention guidelines. Overall, the evaluation indicated that the pilot training raised awareness and improved participants’ knowledge on how to assist a suicidal person, including warning signs. It also contributed to a positive change in attitude or beliefs towards suicide. Although the pilot training was considered adequate for the Syrian context some improvements were suggested

Pion Mass Modification in presence of external magnetic field

In this work, the self energies of $\pi^0$ and $\pi^{\pm}$ up to one loop order have been calculated in the limit of weak external magnetic field. The effective masses are explicitly dependent on the magnetic field which are modified significantly for the pseudoscalar coupling due to weak field approximation of the external field. On the other hand, for the pseudovector coupling, there is a modest increment in the effective masses of the pions. These theoretical developments are relevant for the study of the phenomenological aspect of mesons in the context of neutron stars as well as heavy ion collisions.Comment: Published in conference proceedings of DAE-HEP-2016 (XXII DAE High Energy Physics Symposium, New Delhi, India