Quantum Monte Carlo simulations in the trimer basis: first-order transitions and thermal critical points in frustrated trilayer magnets

Autor: Weber, L., Honecker, A., Normand, B., Corboz, P., Mila, F., Wessel, S.

Publikováno v: SciPost Phys. 12, 054 (2022)

The phase diagrams of highly frustrated quantum spin systems can exhibit first-order quantum phase transitions and thermal critical points even in the absence of any long-ranged magnetic order. However, all unbiased numerical techniques for investiga

Externí odkaz: http://arxiv.org/abs/2105.05271

A quantum magnetic analogue to the critical point of water

Autor: Jiménez, J. Larrea, Crone, S. P. G., Fogh, E., Zayed, M. E., Lortz, R., Pomjakushina, E., Conder, K., Läuchli, A. M., Weber, L., Wessel, S., Honecker, A., Normand, B., Rüegg, Ch., Corboz, P., Rønnow, H. M., Mila, F.

Publikováno v: Nature {\bf 592}, 370 (2021)

At the familiar liquid-gas phase transition in water, the density jumps discontinuously at atmospheric pressure, but the line of these first-order transitions defined by increasing pressures terminates at the critical point, a concept ubiquitous in s

Externí odkaz: http://arxiv.org/abs/2009.14492

Anisotropic XY antiferromagnets in a field

Autor: Selke, W., Wessel, S.

Publikováno v: Eur.Phys.J. Special Topics 226, 779-788 (2017)

Classical anisotropic XY antiferromagnets in a field on square and simple cubic lattices are studied using mainly Monte Carlo simulations. While in two dimensions the ordered antiferromagnetic and spin--flop phases are observed to be separated by a n

Externí odkaz: http://arxiv.org/abs/1609.03365

Voluntary self-disclosed Indigenous identity of patients in four Canadian health care settings: A multiple-site qualitative case study.

Autor: Gray M; Post-Doctoral Associate, Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.; Health System Impact Fellow, Indigenous Wellness Core, Alberta Health Services, Calgary, Alberta, Canada., Wessel S; PhD student, Counselling Psychology, Department of Educational Psychology, University of Calgary, Calgary, Alberta, Canada., Oster RT; Scientific Director, Indigenous Wellness Core, Alberta Health Services, Edmonton, Alberta, Canada.; Adjunct Assistant Professor, Department of Agricultural, Food & Nutritional Sciences, University of Alberta, Edmonton, Alberta, Canada., Bruno G; Assistant Professor, Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada.; Samson Cree Nation, Maskwacîs, AB, Canada., Healy C; Health Analyst, Blackfoot Confederacy Tribal Council, Calgary, AB, Canada., Rich R; Obstetrician & Gynecologist, Royal Alexandra Hospital and Assistant Clinical Professor, University of Alberta, Edmonton, Alberta, Canada., Scott Claringbold S; Msc Student, Community Health Sciences, University of Calgary, Calgary, Alberta, Canada., Williams K; Program Lead for Innovation and Research, Indigenous Wellness Core, Alberta Health Services, Calgary, Alberta, Canadaand Sandy Lake First Nation, ON, Canada., Henderson R; Associate Professor, Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.

Publikováno v: Journal of health services research & policy [J Health Serv Res Policy] 2024 Nov 28, pp. 13558196241300856. Date of Electronic Publication: 2024 Nov 28.

Finite-size effects in Luther-Emery phases of Holstein and Hubbard models

Autor: Greitemann, J., Hesselmann, S., Wessel, S., Assaad, F. F., Hohenadler, M.

Publikováno v: Phys. Rev. B 92, 245132 (2015)

The one-dimensional Holstein model and its generalizations have been studied extensively to understand the effects of electron-phonon interaction. The half-filled case is of particular interest, as it describes a transition from a metallic phase with

Externí odkaz: http://arxiv.org/abs/1510.07454