Gilles Parez receives two FRQNT grants!

Gilles Parez, postdoctoral fellow in the group has just been awarded two FRQNT grants. Congratulations to him!

An NSERC Discovery Grant awarded to William Witczak-Krempa

Professor William Witczak-Krempa was recently awarded an NSERC Discovery Grant.

A futur intern awarded with an NSERC scholarship

Marianne Bouchard, a student in the Bachelor of Physics at Université de Montréal and future intern of the group for summer 2023, has just been awarded the Undergraduate Student Research Awards (USRA) of the NSERC for her summer internship. We congratulate her!

Participation of the group members to the APS March Meeting 2023

APS March Meeting 2023 Welcome screen on laptopThe week of March 5 to 10, 2023 was the occasion for three members of the group to participate in the APS March Meeting which took place in Las Vegas (USA).

Lena Engström had the opportunity to present her project “Strain-induced superconductivity in Sr2IrO4“. To read the summary of her presentation, click here.

Gilles Parez presented his project “Entanglement and separability of Rokhsar-Kivelson and resonating valence-bond states“. To read the abstract of his presentation, click here.

Ren-Bo Wang had the opportunity to present both his project “Hydrodynamic theory of spinon spin current” whose abstract can be read here and the project of Liuke Lyu, a Ph.D. student of the group, “Phonons behave like Electrons in the Thermal Hall Effect of the Cuprates” whose abstract can be read here.


Establishment of the Jiri Patera and Pavel Winternitz Fund

Mrs. Tatiana Patera generously donated $30,000 to the CRM. This amount will be allocated to the Jiri Patera and Pavel Winternitz Fund, in memory of these two researchers who were members of the CRM throughout their careers at the Université de Montréal.

The purpose of this donation is to support the development of mathematical physics in Montreal. In particular, the money donated to this fund will be used to hold an annual event where a renowned researcher, working at the intersection of mathematics and physics, will present recent developments in mathematical physics and interact with senior and junior CRM researchers.

For more information, click here

New preprint publication by Parez et al.

Gilles Parez, Clement Berthiere, William Witczak-Krempa just published a preprint of their paper entitled “Separability and entanglement of resonating valence-bond states“.

Summary of the article

Determining whether a given quantum state is separable is extremely challenging. We achieve this formidable task for local Rokhsar-Kivelson (RK) states and resonating valence-bond (RVB) states. Ubiquitous in condensed matter physics these states can describe quantum critical phases of matter and quantum spin liquids. We proved the exact separability of the reduced density matrix of two disconnected subsystems for dimer RK states on arbitrary graphs. For more general RK states with local constraints we argue separability in the thermodynamic limit. For RVB states we show separability up to exponentially small terms in the distance between the two subsystems thus holding exactly in the scaling limit.


To consult the article in more details, go here.

New preprint publication by Engström et al.

Lena Engström, Chia-Chuan Liu, William Witczak-Krempa and T. Pereg-Barnea have just prepublished their paper entitled “Strain-induced superconductivity in Sr2IrO4“.

Launch of an international network in quantum science and technology

On the initiative of the CNRS, an international network in quantum sciences and technologies will be officially launched on January 1, 2023. It will bring together 16 French and Canadian universities, including the University of Montreal, which will be officially represented on the scientific committee of this network by William Witczak-Krempa.

For more information, click here

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