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First-order transitions and the performance of quantum algorithms in random optimization problems
We present a study of the phase diagram of a random optimization problem in the presence of quantum fluctuations. Our main result is the characterization of the nature of the phase transition, which we find to be a first-order quantum phase transition. We provide evidence that the gap vanishes expon...
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Published in: | Physical review letters 2010-05, Vol.104 (20), p.207206-207206, Article 207206 |
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container_end_page | 207206 |
container_issue | 20 |
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container_title | Physical review letters |
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creator | Jörg, Thomas Krzakala, Florent Semerjian, Guilhem Zamponi, Francesco |
description | We present a study of the phase diagram of a random optimization problem in the presence of quantum fluctuations. Our main result is the characterization of the nature of the phase transition, which we find to be a first-order quantum phase transition. We provide evidence that the gap vanishes exponentially with the system size at the transition. This indicates that the quantum adiabatic algorithm requires a time growing exponentially with system size to find the ground state of this problem. |
doi_str_mv | 10.1103/physrevlett.104.207206 |
format | article |
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title | First-order transitions and the performance of quantum algorithms in random optimization problems |
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