Publications (6)
Entanglement Spectrum as a Probe for the Topology of a Spin-Orbit Coupled Superconductor
Jan Borchmann, Aaron Farrell, Shunji Matsuura +1
The classification of electron systems according to their topology has been at the forefront of condensed matter research in recent years. It has been found that systems of the sam…
Analytic Expression for the Entanglement Entropy of a 2D Topological Superconductor
Jan Borchmann, T. Pereg-Barnea
We study a model of two dimensional, topological superconductivity on a square lattice. The model contains hopping, spin orbit coupling and a time reversal symmetry breaking Zeeman…
Anderson Topological Superconductor
Jan Borchmann, Aaron Farrell, T. Pereg-Barnea
In this paper we study the phase diagram of a disordered, spin-orbit coupled superconductor with -wave or -wave pairing symmetry in symmetry class . We analyze the topo…
Elliptic fibrations for SU(5) x U(1) x U(1) F-theory vacua
Jan Borchmann, Christoph Mayrhofer, Eran Palti +1
Elliptic Calabi-Yau fibrations with Mordell-Weil group of rank two are constructed. Such geometries are the basis for F-theory compactifications with two abelian gauge groups in ad…
Quantum oscillations in Weyl semimetals - a surface theory approach
Jan Borchmann, T. Pereg-Barnea
We develop an effective surface theory for the surface states of a Weyl semimetal. This theory includes the peculiar Fermi arc states on the surface as well as leakage of the state…
SU(5) Tops with Multiple U(1)s in F-theory
Jan Borchmann, Christoph Mayrhofer, Eran Palti +1
We study F-theory compactifications with up to two Abelian gauge group factors that are based on elliptically fibered Calabi-Yau 4-folds describable as generic hypersurfaces. Speci…