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BEGIN:VEVENT
DTSTAMP:20180815T172306Z
LAST-MODIFIED:20180220T181233Z
DTSTART:20180226T160000Z
DTEND:20180226T170000Z
UID:event1897@bu.edu
URL:http://physics.bu.edu/events/show/1897
SUMMARY:"Physics of spin-orbit coupled wires in magnetic field: Majorana mo
des and Lifshitz transitions"
DESCRIPTION:Featuring Jay Sau\, University of Maryland\nHosted by: Anushya
Chandran\n\nPart of the Condensed Matter Theory Seminar Series.\n\nThe comb
ination of spin-orbit coupling and magnetic field produces an interesting b
andstructure with a co-existing Dirac point and Fermi points. In the first
part of my talk I will review how proximity-induced superconductivity is e
xpected to realize Majorana zero modes. I will discuss theoretical understa
nding of the results from the experimental search for Majorana zero modes i
n spin-orbit coupled semiconductor-based topological superconducting system
s. I will conclude this part discussing the possibility of interferometric
detection of topological superconducivity. \nIn the second part we discuss
strongly interacting Bosons subject to the same Hamiltonian\, which would b
e the Tonks gas version of the spin-orbit coupled gases realized in experim
ents. We use the effective Lagrangian formalism for classifying non-relativ
istic Nambu-Goldstone modes due to derive the existance of an Ising transit
ion between two gapless phases that can be thought of as a superfluid minim
ally coupled to an Ising gauge field. This coupling between the Ising model
and the superfluid turns out to modify the dynamical critical exponent fro
m Lorentz-like (z~1) to Lifshitz-like (z~2). We find these predictions to b
e consistent with DMRG simulations.
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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