Abstract
The low-temperature regime of the Euclidean traveling salesman problem is studied numerically. The specific heat behavior is analyzed in terms of the number of cities and compared with that of spin-glasses. A properly defined order parameter shows the existence of freezing effects at low temperature. The Euclidean TSP behaves as a spin glass in two dimensions.
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Bacci, S., Miranda, E.N. The traveling salesman problem and its analogy with two-dimensional spin glasses. J Stat Phys 56, 547–551 (1989). https://doi.org/10.1007/BF01044452
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DOI: https://doi.org/10.1007/BF01044452