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First-Order Phase Transition in the Quantum Adiabatic Algorithm

Authors :
CALIFORNIA UNIV SANTA CRUZ DEPT OF PHYSICS
Young, A P
Knysh, S
Smelyanskiy, V N
CALIFORNIA UNIV SANTA CRUZ DEPT OF PHYSICS
Young, A P
Knysh, S
Smelyanskiy, V N
Source :
DTIC
Publication Year :
2010

Abstract

We simulate the quantum adiabatic algorithm (QAA) for the exact cover problem for sizes up to N = 256 using quantum Monte Carlo simulations incorporating parallel tempering. At large N, we find that some instances have a discontinuous (first-order) quantum phase transition during the evolution of the QAA. This fraction increases with increasing N and may tend to 1 for N - infinity.<br />Published in the Journal of Physical Review Letters, v104 n2 Article 020502 p1-4, 2010.

Details

Database :
OAIster
Journal :
DTIC
Notes :
text/html, English
Publication Type :
Electronic Resource
Accession number :
edsoai.ocn872731713
Document Type :
Electronic Resource