3 papers
cond-mat.dis-nn2018
Field Theory of Disordered Elastic Interfaces at 3-Loop Order: The -Function
Kay Joerg Wiese, Christoph Husemann, Pierre Le Doussal
We calculate the effective action for disordered elastic manifolds in the ground state (equilibrium) up to 3-loop order. This yields the renormalization-group -function to third…
cond-mat.dis-nn2017
Field Theory of Disordered Elastic Interfaces at 3-Loop Order: Critical Exponents and Scaling Functions
Christoph Husemann, Kay Joerg Wiese
For disordered elastic manifolds in the ground state (equilibrium) we obtain the critical exponents for the roughness and the correction-to-scaling up to 3-loop order, i.e. third o…
cond-mat.str-el2009
Efficient Fermionic One-Loop RG for the 2D Hubbard Model at Van Hove Filling
Christoph Husemann, Manfred Salmhofer
We propose a novel parametrization of the four-point vertex function in the one-loop one-particle irreducible renormalization group (RG) scheme for fermions. It is based on a decom…