Neuhaus, Thomas; Magiera, Martin; Hansmann, Ulrich H. E.:
Efficient parallel tempering for first-order phase transitions
2007
In: Physical review : E, Jg. 76 (2007), Heft 4, S. 045701 (4 Seiten)
Artikel/Aufsatz in Zeitschrift2007Physik
Titel:
Efficient parallel tempering for first-order phase transitions
Autor(in):
Neuhaus, Thomas; Magiera, MartinLSF; Hansmann, Ulrich H. E.
Erscheinungsjahr
2007
DOI:

Abstract:

We present a Monte Carlo algorithm that facilitates efficient parallel tempering simulations of the density of states g(E). We show that the algorithm eliminates the supercritical slowing down in the case of the Q=20 and Q=256 Potts models in two dimensions, typical examples for systems with extreme first-order phase transitions. As recently predicted, and shown here, the microcanonical heat capacity along the calorimetric curve has negative values for finite systems.