The condensation phase transition in random graph coloring

Victor Bapst, Amin Coja-Oghlan, Samuel Hetterich, Felicia Raßmann, Dan Vilenchik

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Based on a non-rigorous formalism called the "cavity method", physicists have made intriguing predictions on phase transitions in discrete structures. One of the most remarkable ones is that in problems such as random κ-SAT or random graph κ-coloring, very shortly before the threshold for the existence of solutions there occurs another phase transition called condensation [Krzakala et al., PNAS 2007]. The existence of this phase transition seems to be intimately related to the difficulty of proving precise results on, e. g., the κ-colorability threshold as well as to the performance of message passing algorithms. In random graph κ-coloring, there is a precise conjecture as to the location of the condensation phase transition in terms of a distributional fixed point problem. In this paper we prove this conjecture, provided that κ exceeds a certain constant κ0.

Original languageAmerican English
Title of host publicationLeibniz International Proceedings in Informatics, LIPIcs
EditorsKlaus Jansen, Jose D. P. Rolim, Nikhil R. Devanur, Cristopher Moore
PublisherSchloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing
Pages449-464
Number of pages16
ISBN (Electronic)9783939897743
DOIs
StatePublished - 1 Sep 2014
Externally publishedYes
Event17th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2014 and the 18th International Workshop on Randomization and Computation, RANDOM 2014 - Barcelona, Spain
Duration: 4 Sep 20146 Sep 2014

Publication series

NameLeibniz International Proceedings in Informatics, LIPIcs
Volume28

Conference

Conference17th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2014 and the 18th International Workshop on Randomization and Computation, RANDOM 2014
Country/TerritorySpain
CityBarcelona
Period4/09/146/09/14

Keywords

  • Graph coloring
  • Message-passing algorithm
  • Phase transitions
  • Random graphs

All Science Journal Classification (ASJC) codes

  • Software

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