CMT Seminar - Hong Yao, Tsinghua University - Monday, March 20th -11:30am, 1080 Smith Seminar Room PRB

[Lu, Yuanming]

Dear all:

Just a reminder of the CMT seminar at 1130AM today in Smith seminar room.

Best,

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Yuan-Ming Lu

Assistant Professor of Physics | The Ohio State University
191 W Woodruff Avenue, Columbus OH 43210

Office:  2012 Physics Research Building
Phone:  614-292-3084
Fax:      614-292-7557
email:   lu.1435 at osu.edu

________________________________
From: physics-faculty-assistant [physics-faculty-assistant-bounces at lists.osu.edu] on behalf of Robbins, Eric
Sent: Friday, March 17, 2017 9:56 AM
To: physics-all at lists.osu.edu
Subject: CMT Seminar - Hong Yao, Tsinghua University - Monday, March 20th -11:30am, 1080 Smith Seminar Room PRB

Please join us for a CMT Seminar presented by Hong Yao, next Monday, March 20th at 11:30am in 1080 Smith Seminar Room

Title: Emergent spacetime supersymmetry in 2D and 3D topological phases
Abstract: Proposed as a fundamental symmetry describing our universe, spacetime supersymmetry (SUSY) has not been discovered yet in nature. Nonetheless, SUSY may emerge in low-energy and long-wavelength physics of condensed matter systems. In this talk, I will focus on three interesting cases of emergent SUSY. Firstly, from renormalization group analysis, we demonstrate the first example of emergent spacetime SUSY in 3D that occurs at the quantum superconducting transition in 3D Weyl semimetals [1]. Secondly, we show that 2D supersymmetric quantum electrodynamics with dynamical gauge bosons and fermionic gauginos emerges naturally at the pair-density-wave quantum phase transition on the surface of a correlated topological insulator hosting three Dirac cones, such as the candidate topological Kondo insulator SmB6 [2]. Thirdly, by performing sign-problem-free Majorana-quantum-Monte-Carlo [3,4] simulations of an interacting 2D topological superconductor, we show convincing evidences that the N=1 SUSY emerges at its edge quantum critical point (EQCP). Remarkably, near the EQCP, we find that the edge Majorana fermion acquires a mass which is identical with that of its bosonic superpartner. To the best of our knowledge, this is the first observation that fermions and bosons have equal dynamically-generated masses, a hallmark of emergent SUSY [5].

[1] Shao-Kai Jian, Yi-Fan Jiang, and Hong Yao, Phys. Rev. Lett. 114, 237001 (2015).
[2] Shao-Kai Jian, Chien-Hung Lin, Joseph Maciejko, and Hong Yao, arXiv:1609.02146.
[3] Zi-Xiang Li, Yi-Fan Jiang, and Hong Yao, Phys. Rev. B 91, 241117(R) (2015).
[4] Zi-Xiang Li, Yi-Fan Jiang, and Hong Yao, Phys. Rev. Lett. 117, 267002 (2016).
[5] Zi-Xiang Li, Yi-Fan Jiang, and Hong Yao, arXiv:1610.04616.

Host: Yuan-Ming Lu, Ph.D.

Thank you,
Eric


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