报告内容：

The generalization of quantum phase transitions to non-equilibrium conditions raises a number of questions, in particular, if and how out-of-equilibrium critical phenomena can be categorized into universality classes, in analogy with thermal equilibrium. Here we explore the non-equilibrium steady-state of a transverse magnetic field Ising chain coupled at its ends to magnetic thermal reservoirs. We generalize the phase diagram [1] to non-equilibrium conditions obtained by applying a magnetization bias to the reservoirs [2]. Our findings show that out-of-equilibrium conditions allow for novel critical phenomena not possible at equilibrium.

[1] P. Ribeiro and V. R. Vieira, Phys. Rev. B 92, 100302(R) (2015).

[2] T. O. Puel and S. Chesi and S. Kirchner and P. Ribeiro, arXiv:1809.07219. Accepted in PRL.

报告地点：仓前校区勤园20号楼518会议室

报告时间：2019年6月12日14：30－15：30

报告人简介：

Dr. Tharnier O. Puel researches different fields on Solid State Physics with focus on topological phases of matter and non-equilibrium systems. He specialized on phase transitions in topological superconductors during his PhD in 2014, shared between UFSC-Brasil and IST-Portugal. The next two years were spent in the Brazilian Center of Physical Research as Postdoctoral researcher, focusing on the effect of multi-bands on non-conventional superconductivity. In 2017, Dr. T. O. Puel has joint a Postdoctoral position at Beijing Computational Research Center and IST-Lisbon, during which he extended his research to the physics of non-equilibrium open quantum systems. Since April he joined the Correlated Quantum Matter Group at Zhejiang University.