General linear spin wave theory for incommensurate magnetic structures

S. Toth 2, 3, ∗ and B. Lake 4 Laboratory for Neutron Scattering, PSI, CH-5232 Villigen, Switzerland Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, D-14109 Berlin, Germany Laboratory for Quantum Magnetism, ICMP, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland Institut fur Festkorperphysik, Technische Universitat Berlin, Hardenbergstrase 36, D-10623 Berlin, Germany (Dated: March 4, 2014)