2014
DOI: 10.1088/1674-1137/38/12/123102
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Quantum phase transitions in matrix product states of one-dimensional spin-½ chains

Abstract: For the matrix product system of a one-dimensional spin-½ chain, we present a new model of quantum phase transitions and find that in the thermodynamic limit, both sides of the critical point are respectively described by phases |Ψa〉 = |1…1〉 representing all particles spin up and |Ψb〉 = |0…0〉 representing all particles spin down, while the phase transition point is an isolated intermediate-coupling point where the two phases coexist equally, which is described by the so-called N-qubit maximally entangled GHZ s… Show more

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