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Seminars

Quan-ph 20181026 Gauge Theory and Nematic Order

by Dr Ke Liu (LMU Munich, Germany)

Asia/Shanghai
TDLI Meeting Room 202

TDLI Meeting Room 202

Description
Abstract

The notion of spontaneous symmetry breaking plays a vital role in modern condensed matter physics. However, an obvious aspect has often been overlooked: a symmetry can spontaneously break down to any of its subgroups. Each of these subgroups corresponds to phases with distinctive long range order. In this talk, I will attempt to give a perspective onto general O(3)-broken orders. These include conventional magnetic and Neel order and various nematic/multipolar orders. A lattice gauge theory is utilized. We will see how the latter can be used to classify their tensor order parameters and study the general property of the associated phase transitions.

Biography

PROFESSIONAL EXPERIENCE:

10/2016 --    Postdoctoral fellow, LMU Munich, Germany

EDUCATION:

2016            Ph.D., Theoretical Physics, Leiden University, The Netherlands, Supervisor: Prof. Jan Zaanen

RESEARCH FIELDS:

Theoretical condensed matter physics

Division
Condensed Matter