New methods to measure phase transition strength

✍ Scribed by Wolfhard Janke; Des Johnston; Ralph Kenna

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 275 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)01710-9

✦ Synopsis

A recently developed technique to determine the order and strength of phase transitions by extracting the density of partition function zeroes (a continuous function) from finite-size systems (a discrete data set) is generalized to systems for which (i) some or all of the zeroes occur in degenerate sets and/or (ii) they are not confined to a singular line in the complex plane. The technique is demonstrated by application to the case of free Wilson fermions.