This colloquium-style distinguished lectures takes places at AlbaNova University Center

in Stockholm on annual basis. AlbaNova University Center host physics departments of

the Royal Institute of Technology, Stockholm University and Nordita.

The Lise Meitner Distinguished Lecture is sponsored by The Royal Swedish Academy of Sciences through its Nobel Committee for Physics.

The Lise Meitner Dinstinguished Lecture committee (2016)

Egor Babaev (KTH)

Thors Hans Hansson (Stockholm University)

Mats Wallin (KTH)

Frank Wilczek (MIT and Stockholm University)

2015: Frank Wilczek (MIT)

The shape of physics, and technology closely related to physics, over the next one hundred years. Themes include the many

faces of unification, the re-imagining of quantum theory, and new forms of engineering on small, intermediate, and large scales.

2016: Bert Halperin (Harvard University)

Theory predicts the existence of some peculiar phases of quantum condensed matter systems, in which there are extra degrees

of freedom with very low energy, if localized “defects” are present. In one class of these phases, the size of the low-energy

Hilbert space corresponds to one-half degree of freedom per defect, and the defects are said too be sites of localized

zero-energy “Majorana modes”. The defects are predicted to obey “non-Abelian statistics” -- i.e., if various defects

can be moved around each other, or if two identical defects can be interchanged, the result will be a unitary transformation

on the quantum mechanical state that depends on the order in which operations are performed, but is insensitive to

many other details. The talk will introduce these concepts and discuss some attempts to realize them in condensed matter systems.