Speaker
Sera Cremonini
(Lehigh University)
Description
In this talk I will discuss a holographic model of a striped
superconductor,
in which a U(1) symmetry and translational invariance are
broken spontaneously at the same time.
This construction provides a concrete example of intertwined
orders in holography, and realizes certain key features
of pair density wave order.
I will also examine the behavior of a probe fermion in this
background and the formation and evolution of a
Fermi surface in the corresponding PDW phase, in the
presence of an explicit UV lattice.
The structure of the Fermi surface is very sensitive to the
strength of the lattice. In particular,
strong lattice effects lead to a broadening of the spectral
weight peaks and a
gradual disappearance of the Fermi surface along the
symmetry breaking direction. The resulting Fermi surface
appears to consist of detached segments
reminiscent of Fermi arcs.
