69 research outputs found
Localisation of Dirac eigenmodes and confinement in gauge theories: the Roberge-Weiss transition
Ample numerical evidence from lattice calculations shows a strong connection
between the confining properties of gauge theories at finite temperature and
the localisation properties of the low-lying Dirac eigenmodes. In this
contribution we discuss recent progress on this topic, focussing on results for
QCD at imaginary chemical potential at temperatures above the
Roberge-Weiss transition temperature. These confirm the general picture of low
modes turning from delocalised to localised at the deconfinement transition, in
a previously unexplored setup with a genuine, physical transition in the
presence of dynamical fermions. This further supports the use of Dirac
eigenmodes as a tool to investigate the mechanisms behind confinement and the
deconfinement transition.Comment: 8 pages, 4 figures; contribution to the proceedings of the XVth Quark
Confinement and Hadron Spectrum conference (ConfXV), 1-6 August 2022,
University of Stavanger, Stavanger (Norway
Localisation of Dirac eigenmodes and confinement in gauge theories: the Roberge-Weiss transition
Ample numerical evidence from lattice calculations shows a strong connection between the confining properties of gauge theories at finite temperature and the localisation properties of the low-lying Dirac eigenmodes. In this contribution we discuss recent progress on this topic, focussing on results for QCD at imaginary chemical potential μI/T = π at temperatures above the Roberge-Weiss transition temperature. These confirm the general picture of low modes turning from delocalised to localised at the deconfinement transition, in a previously unexplored setup with a genuine, physical transition in the presence of dynamical fermions. This further supports the use of Dirac eigenmodes as a tool to investigate the mechanisms behind confinement and the deconfinement transition
Suicide attempts, suicide and their association with socio-demographic variables in Iran: a retrospective, registry-based, cohort study (2016-2021)
INTRODUCTION: Suicide is recognized as one of the most significant concerns in healthcare and a serious psychological health issue in many countries throughout the world. Suicide attempts occur in all social sectors and demographics. It is important to know what are the causes for people to try to commit suicide for an effective prevention and control. The aim of this review was to find out the levels and predictors of suicide attempts.
MATERIAL AND METHODS: A cross-sectional descriptive-analytical research looked for suicide attempt reported cases at Dr. Moaven Hospital in Sahneh, Iran, during the 2016–2021 period. Data was collected via checklists completed by supervisors during referrals and subsequently analyzed using the SPSS Statistics software tool (version 24). Descriptive statistics and the Chi-square test were used. A significance threshold of 0.05 was used.
RESULTS: A total of 1,059 cases of suicide attempts were found. The highest prevalence rate was reported in the group ages 16–25. Males had higher rates of cases (57.4%), which were twice more prevalent in cities and more common in lower-socioeconomic-status families Furthermore, the most common method used (79.5%) was medication intake. There was also a significant association between marital status, job, and suicide-attempt rates (p < 0.05).
CONCLUSIONS: Suicide attempts are among the most important issues in terms of psychosocial healthcare in all countries and communities, and their prevalence rates may be determined by a variety of factors, such as mental health status, family and living conditions, financial problems and unemployment rate. Preventive control of these factors can contribute to reducing the prevalence of these acts
Towards a muon collider
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. This Review summarises the status and the recent advances on muon colliders design, physics and detector studies. The aim is to provide a global perspective of the field and to outline directions for future work
Towards a Muon Collider
A muon collider would enable the big jump ahead in energy reach that is
needed for a fruitful exploration of fundamental interactions. The challenges
of producing muon collisions at high luminosity and 10 TeV centre of mass
energy are being investigated by the recently-formed International Muon
Collider Collaboration. This Review summarises the status and the recent
advances on muon colliders design, physics and detector studies. The aim is to
provide a global perspective of the field and to outline directions for future
work.Comment: 118 pages, 103 figure
Towards a muon collider
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. This Review summarises the status and the recent advances on muon colliders design, physics and detector studies. The aim is to provide a global perspective of the field and to outline directions for future work
Erratum: Towards a muon collider
The original online version of this article was revised: The additional reference [139] has been added. Tao Han’s ORICD ID has been incorrectly assigned to Chengcheng Han and Chengcheng Han’s ORCID ID to Tao Han. Yang Ma’s ORCID ID has been incorrectly assigned to Lianliang Ma, and Lianliang Ma’s ORCID ID to Yang Ma. The original article has been corrected
Study of forward Z + jet production in pp collisions at √s=7 TeV
A measurement of the +jet production cross-section in collisions at a centre-of-mass energy TeV is presented. The analysis is based on an integrated luminosity of recorded by the LHCb experiment. Results are shown with two jet transverse momentum thresholds, 10 and 20 GeV, for both the overall cross-section within the fiducial volume, and for six differential cross-section measurements. The fiducial volume requires that both the jet and the muons from the Z boson decay are produced in the forward direction (). The results show good agreement with theoretical predictions at the second-order expansion in the coupling of the strong interaction.A measurement of the +jet production cross-section in collisions at a centre-of-mass energy TeV is presented. The analysis is based on an integrated luminosity of recorded by the LHCb experiment. Results are shown with two jet transverse momentum thresholds, 10 and 20 GeV, for both the overall cross-section within the fiducial volume, and for six differential cross-section measurements. The fiducial volume requires that both the jet and the muons from the Z boson decay are produced in the forward direction (). The results show good agreement with theoretical predictions at the second-order expansion in the coupling of the strong interaction
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