APCTP	■ Introduction · Greetings · Milestones · Organization Chart · Board Members · Staff Members · Former Board Members · Annual Reports · APCTP Logo · Contact us ■ Members · Member Countries · Partnership Institutions ■ Media · APCTP in Media · AAPPS Bulletin ■ Visitor Information · Plan Your Visit · Directions · Tips for Visitors · Facilities Guide · Map ■ Sponsors

Activities	■ Scientific Activities · Scientific Programs · Seminars & Lectures · ICTP Affiliated Center (ICAC) · Scientific Calendar · Call for Programs · Past Scientific Programs · Past Seminars & Lectures · Payment ■ Awards and Visitors · Benjamin Lee Professorship · Visitors · Visitor Information · Visitor Application ■ Outreach Programs · Web Journal <Crossroads> · APCTP Books · Events · Science at Pohang · Past Events

Research	■ Junior Research Groups ■ Young Scientist Training Program ■ Senior Advisory Group ■ APCTP-POSTECH Fellows ■ Publications

Asia Pacific Network	■ Academic Activities in the AP Region · Seminars at IBS: Theoretical Physics of Complex Systems · Center For QUANTUM SPACETIME · Association of Asia Pacific Physical Societies · FIST - Asia Network on HEP · ANPhA - Asian Nuclear Physics Association · APCTP Japan Committee · ICTP Asian Network on Condensed Matter and Complex Systems

Seminars & Lectures

* TITLE

Topological superfluidity of 3He-B

* SPEAKERS

Name	Affiliation	E-mail
Takeshi Mizushima	Okayama University	mizushima(at)mp.okayama-u.ac.jp

* HOST(Applicant)

Name	Affiliation	E-mail
Gentaro Watanabe		gentaro_watanabe(at)apctp.org

* DATE / TIME

2013-05-09, 4PM

* ABSTRACT

The superfluid 3He-B has been recognized as a concrete example of topological superconductors, where the time-reversal symmetry ensures a nontrivial topological number and helical Majorana fermions. This may indicate that any time-reversal breaking disturbance wipes out the topological nature. In this talk, I will demonstrate that the B phase under a magnetic field in a particular direction stays topological due to a discrete symmetry, that is, in a symmetry protected topological order [1]. Due to the symmetry protected topological order, helical surface Majorana fermions in the B phase remain gapless and their Ising spin character persists. The competition between the Zeeman magnetic field and dipole interaction involves an anomalous quantum phase transition where a topological phase transition takes place together with spontaneous breaking of symmetry.

Map

How to get to APCTP

Scientific Activities Calendar

Scientific programs

Modal title

Modal title