Truncated unity parquet solver
نویسندگان
چکیده
منابع مشابه
Parquet approximation for the 4x4 Hubbard cluster.
We present a numerical solution of the parquet approximation, a conserving diagrammatic approach which is self-consistent at both the single-particle and the two-particle levels. The fully irreducible vertex is approximated by the bare interaction thus producing the simplest approximation that one can perform with the set of equations involved in the formalism. The method is applied to the Hubb...
متن کاملParquet Approximation in Large N Matrix Theories
A parquet approximation (generalized ladder diagrams) in matrix models is considered. By means of numerical calculations we demonstrate that in the large N limit the parquet approximation gives an excellent agreement with exact results.
متن کاملA Particle-Partition of Unity Method Part VI: A p-robust Multilevel Solver
In this paper we focus on the efficient multilevel solution of linear systems arising from a higher order discretization of a second order partial differential equation using a partition of unity method. We present a multilevel solver which employs a tree-based spatial multilevel sequence in conjunction with a domain decomposition type smoothing scheme. The smoother is based on an overlapping s...
متن کاملA Particle-Partition of Unity Method-Part III: A Multilevel Solver
In this sequel to [15, 16] we focus on the efficient solution of the linear block-systems arising from a Galerkin discretization of an elliptic partial differential equation of second order with the partition of unity method (PUM). We present a cheap multilevel solver for partition of unity discretizations of any order. The shape functions of a PUM are products of piecewise rational partition o...
متن کاملCurve Evolution Schemes for Parquet Deformations
In this paper, I consider the question of how to carry out aesthetically pleasing evolution of the curves that make up the edges in a parquet deformation. Within the framework of simple arrangements of square tiles, I explore curve evolution models based on grids, iterated function systems, and organic labyrinthine paths.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2020
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.101.155104