When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Bethe lattice - Wikipedia

   en.wikipedia.org/wiki/Bethe_lattice

   A Bethe lattice with coordination number z = 3. In statistical mechanics and mathematics, the Bethe lattice (also called a regular tree) is an infinite symmetric regular tree where all vertices have the same number of neighbors. The Bethe lattice was introduced into the physics literature by Hans Bethe in 1935.

3. Bethe ansatz - Wikipedia

   en.wikipedia.org/wiki/Bethe_ansatz

   In physics, the Bethe ansatz is an ansatz for finding the exact wavefunctions of certain quantum many-body models, most commonly for one-dimensional lattice models. It was first used by Hans Bethe in 1931 to find the exact eigenvalues and eigenvectors of the one-dimensional antiferromagnetic isotropic (XXX) Heisenberg model .

4. Dynamical mean-field theory - Wikipedia

   en.wikipedia.org/wiki/Dynamical_mean-field_theory

   The DMFT treatment of lattice quantum models is similar to the mean-field theory (MFT) treatment of classical models such as the Ising model. [6] In the Ising model, the lattice problem is mapped onto an effective single site problem, whose magnetization is to reproduce the lattice magnetization through an effective "mean-field".

5. Supersolvable lattice - Wikipedia

   en.wikipedia.org/wiki/Supersolvable_lattice

   Hasse diagram of the noncrossing partition lattice on a 4 element set. The leftmost maximal chain is a chief chain. A group is supersolvable if and only if its lattice of subgroups is supersolvable. A chief series of subgroups forms a chief chain in the lattice of subgroups. [3] The partition lattice of a finite set is supersolvable.

6. Bethe–Slater curve - Wikipedia

   en.wikipedia.org/wiki/Bethe–Slater_curve

   The Bethe–Slater curve is a heuristic explanation for why certain metals are ferromagnetic and others are antiferromagnetic. It assumes a Heisenberg model of magnetism, and explains the differences in exchange energy of transition metals as due to the ratio of the interatomic distance a to the radius r of the 3d electron shell . [ 1 ]

7. Talk:Bethe lattice - Wikipedia

   en.wikipedia.org/wiki/Talk:Bethe_lattice

   I'm not an expert in the field, but I happened to read a related article (Pys.Rev.E 75(2007)026105 on the Ising model on networks with Cayley-tree-like structure.

8. Lattice (group) - Wikipedia

   en.wikipedia.org/wiki/Lattice_(group)

   In geometry and group theory, a lattice in the real coordinate space is an infinite set of points in this space with the properties that coordinate-wise addition or subtraction of two points in the lattice produces another lattice point, that the lattice points are all separated by some minimum distance, and that every point in the space is within some maximum distance of a lattice point.

9. William A. Veech - Wikipedia

   en.wikipedia.org/wiki/William_A._Veech

   William A. Veech was the Edgar O. Lovett Professor of Mathematics at Rice University [1] until his death. His research concerned dynamical systems; he is particularly known for his work on interval exchange transformations, and is the namesake of the Veech surface.