@techreport{DeSimoneDiehlJuengerMutzelReineltRinaldi96a,
TITLE = {Exact ground states of two-dimensional \${\textbackslash}pm J\$ Ising Spin Glasses},
AUTHOR = {De Simone, C. and Diehl, M. and J{\"u}nger, Michael and Mutzel, Petra and Reinelt, Gerhard and Rinaldi, G.},
LANGUAGE = {eng},
URL = {http://domino.mpi-inf.mpg.de/internet/reports.nsf/NumberView/1996-1-004},
NUMBER = {MPI-I-1996-1-004},
INSTITUTION = {Max-Planck-Institut f{\"u}r Informatik},
ADDRESS = {Saarbr{\"u}cken},
YEAR = {1996},
DATE = {1996},
ABSTRACT = {In this paper we study the problem of finding an exact ground state of a two-dimensional $\pm J$ Ising spin glass on a square lattice with nearest neighbor interactions and periodic boundary conditions when there is<br>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 $50\times 50$ in a moderate amount of computation time (up to one hour each) for several values of $p$. For the ground state energy of an infinite spin glass system with $p=0.5$ we estimate $E_{0.5}^\infty = -1.4015 \pm0.0008$.<br>We report on extensive computational tests based on more than $22\,000$ experiments.},
TYPE = {Research Report / Max-Planck-Institut für Informatik},
}