Speaker
James Sauls (Northwestern University)
(Northwestern University)
Description
Broken symmetries in bulk condensed matter systems have
implications for the spec-
trum of Fermionic excitations bound to surfaces and
topological defects. I discuss
the relationship between the broken symmetry of the ground
state and the topolog-
ical nature of bound states at surfaces, domain walls and
topological line defects.
In addition to the Fermionic spectrum, strong interactions
lead to Bosonic excita-
tions in unconventional superconductors and superfluids.
These excitations provide
unique signatures for broken symmetries of the ground state.
I discuss examples and
applications to the superfluid phases of 3He, Sr2RuO4,
cuprate and heavy fermion
superconductors.
