Exact stripe, checkerboard, and droplet ground states in two dimensions
نویسندگان
چکیده
منابع مشابه
Finite Size Scaling Analysis of Exact Ground States for ±J Spin Glass Models in Two Dimensions
— With the help of exact ground states obtained by a polynomial algorithm we compute the domain wall energy ∆ at zero-temperature for the bond-random and the site-random Ising spin glass model in two dimensions. We find that in both models the stability of the ferromagnetic and the spin glass order ceases to exist at a unique concentration pc for the ferromagnetic bonds. In the vicinity of this...
متن کاملExact Ground States of Two - Dimensional J Ising Spin
In this paper we study the problem of nding an exact ground state of a two-dimensional J Ising spin glass on a square lattice with nearest neighbor interactions and periodic boundary conditions when there is a concentration p of negative bonds, with p ranging between 0:1 and 0:9. With our exact algorithm we can determine ground states of grids of sizes up to 50 50 in a moderate amount of comput...
متن کاملExact Ground States of Two-Dimensional J Ising Spin Glasses
In this paper we study the problem of nding an exact ground state of a two-dimensional J Ising spin glass on a square lattice with nearest neighbor interactions and periodic boundary conditions when there is a concentration p of negative bonds, with p ranging between 0:1 and 0:9. With our exact algorithm we can determine ground states of grids of sizes up to 50 50 in a moderate amount of comput...
متن کاملExact insulating and conducting ground states of a periodic Anderson model in three dimensions.
We present a class of exact ground states of a three-dimensional periodic Anderson model at 3/4 filling. Hopping and hybridization of d and f electrons extend over the unit cell of a general Bravais lattice. Employing novel composite operators combined with 55 matching conditions the Hamiltonian is cast into positive semidefinite form. A product wave function in position space allows one to ide...
متن کاملExact ground states of the periodic Anderson model in D=3 dimensions
We construct a class of exact ground states of three-dimensional periodic Anderson models PAMs , including the conventional PAM, on regular Bravais lattices at and above 3/4 filling, and discuss their physical properties. In general, the f electrons can have a weak dispersion, and the hopping and the nonlocal hybridization of the d and f electrons extend over the unit cell. The construction is ...
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: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.73.014524