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

Nonlinear Waves in Complex Systems: essentials, problems, perspectives

* SPEAKERS

Name	Affiliation	E-mail
Sergej Flach	MPI-PKS Dresden

* HOST(Applicant)

Name	Affiliation	E-mail
Jihye Jeong	APCTP	sec(at)apctp.org

* DATE / TIME

2012-05-10, 11:00AM

* PLACE

APCTP Headquarters, Pohang

* ABSTRACT

Wave dynamics is of central importance in many branches of science and applications. At the linear limit the properties of waves are fully defined by their amplitudes and phases. Nonlinear interactions between waves lead to a plethora of novel phenomena which drastically and qualitatively effect relaxation, conductivity, transmission, and coherence, among others.

I will discuss the state of the art in the theoretical understanding of nonlinear waves by sampling the Fermi-Pasta-Ulam problem of equipartition in statistical physics, the localization of lattice waves into discrete breathers, the out-of-equilibrium ratcheting of wave energy, and the destruction of Anderson localization in disordered media by nonlinearity.

I will briefly discuss applications such as light propagation, dynamics of ultracold atomic clouds, and Fano resonances in nanoscale structures. Surprisingly these ideas turn out to be useful also in computer science. I will demonstrate it using password encryption schemes as an example.

Map

How to get to APCTP

Scientific Activities Calendar

Scientific programs

Modal title

Modal title