Hamburg 2001 – wissenschaftliches Programm
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DY: Dynamik und Statistische Physik
DY 43: Kritische Ph
änomene und Phasenumwandlungen
DY 43.4: Vortrag
Donnerstag, 29. März 2001, 11:15–11:30, S 7
The Strength of First- and Second-Order Phase Transitions from Partition Function Zeroes — •Wolfhard Janke1 and Ralph Kenna2 — 1Institut für Theoretische Physik, Augustusplatz 10/11, Universität Leipzig, 04109 Leipzig — 2School of Mathematics, Trinity College Dublin, Ireland
We present a numerical technique employing the density of partition function zeroes (i) to distinguish between phase transitions of first and higher order, (ii) to examine the crossover between such phase transitions and (iii) to measure the strength of first- and second-order phase transitions in the form of latent heat and critical exponents. These techniques are demonstrated in applications to a number of models for which zeroes are available.
[1] W. Janke, R. Kenna, cond-mat/0012026, to appear in J. Stat. Phys. (2001).