Minimally Entangled Typical Quantum States at Finite Temperature
Abstract
We introduce a class of states, called minimally entangled typical thermal states, designed to resemble a typical state of a quantum system at finite temperature with a bias towards classical (minimally entangled) properties. These states reveal in an intuitive way properties such as shortrange order which may often be hidden. A finiteT density matrix renormalization group algorithm is presented which is only modestly slower than the T=0 density matrix renormalization group.
 Publication:

Physical Review Letters
 Pub Date:
 May 2009
 DOI:
 10.1103/PhysRevLett.102.190601
 arXiv:
 arXiv:0902.4475
 Bibcode:
 2009PhRvL.102s0601W
 Keywords:

 05.50.+q;
 03.67.Lx;
 75.10.Jm;
 75.40.Mg;
 Lattice theory and statistics;
 Quantum computation;
 Quantized spin models;
 Numerical simulation studies;
 Condensed Matter  Strongly Correlated Electrons;
 Condensed Matter  Statistical Mechanics
 EPrint:
 4 pages, 3 figures. v2 has some additional references