Correlators of N = 1 superconformal currents
Journal of Physics A: Mathematical and Theoretical 42:5 (2009)
Abstract:
We give an explicit expression for the M-point correlator of the superconformal current in two-dimensional N = 1 superconformal field theories. © 2009 IOP Publishing Ltd.Majorana fermions of a two-dimensional px +i py superconductor
Physical Review B - Condensed Matter and Materials Physics 79:13 (2009)
Abstract:
To investigate Majorana fermionic excitations of a px +i py superconductor, the Bogoliubov-de Gennes equation is solved on a sphere for two cases: (i) a vortex-antivortex pair at opposite poles and (ii) an edge near the south pole and an antivortex at the north pole. The vortex cores support a state of two Majorana fermions, the energy of which decreases exponentially with the radius of the sphere, independently of a moderate disorder potential. The tunneling conductance of an electron into the superconductor near the position of a vortex is computed for finite temperature and is compared to the case of an s -wave superconductor. The zero-bias conductance peak of the antivortex is half that of the vortex. This effect can be used as a probe of the order-parameter symmetry and as a direct measurement of the Majorana fermion. © 2009 The American Physical Society.Central Charge and Quasihole Scaling Dimensions From Model Wavefunctions: Towards Relating Jack Wavefunctions to W-algebras
(2009)