Title
Phase transitions and random quantum satisfiability
Abstract
Alongside the effort underway to build quantum computers, it is important to better understand which classes of problems they will find easy and which others even they will find intractable. We study random ensembles of the QMA$_1$-complete quantum satisfiability (QSAT) problem introduced by Bravyi. QSAT appropriately generalizes the NP-complete classical satisfiability (SAT) problem. We show that, as the density of clauses/projectors is varied, the ensembles exhibit quantum phase transitions between phases that are satisfiable and unsatisfiable. Remarkably, almost all instances of QSAT for any hypergraph exhibit the same dimension of the satisfying manifold. This establishes the QSAT decision problem as equivalent to a, potentially new, graph theoretic problem and that the hardest typical instances are likely to be localized in a bounded range of clause density.
Year
Venue
Keywords
2009
Clinical Orthopaedics and Related Research
satisfiability,neural network,quantum physics,quantum computer,decision problem,computational complexity,statistical mechanics,phase transition,quantum phase transition
Field
DocType
Volume
Quantum complexity theory,Quantum statistical mechanics,Discrete mathematics,Quantum mechanics,Satisfiability,Quantum computer,Quantum simulator,Quantum algorithm,Quantum information,Mathematics,Quantum network
Journal
abs/0903.1
ISSN
Citations 
PageRank 
Quant. Inf. and Comp. (2010) vol. 10 (1) 1 pp. 0001-0015
7
0.56
References 
Authors
0
4
Name
Order
Citations
PageRank
C. R. Laumann1163.09
R. Moessner2151.79
A. Scardicchio3152.46
S. L. Sondhi4152.12