Universität zu Köln

Buchhold, Michael ORCID: 0000-0001-5194-9388 and Diehl, Sebastian (2016). Background field functional renormalization group for absorbing state phase transitions. Phys. Rev. E, 94 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2470-0053

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Abstract

We present a functional renormalization group approach for the active to inactive phase transition in directed percolation-type systems, in which the transition is approached from the active, finite density phase. By expanding the effective potential for the density field around its minimum, we obtain a background field action functional, which serves as a starting point for the functional renormalization group approach. Due to the presence of the background field, the corresponding nonperturbative flow equations yield remarkably good estimates for the critical exponents of the directed percolation universality class, even in low dimensions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Buchhold, Michael UNSPECIFIED orcid.org/0000-0001-5194-9388 UNSPECIFIED Diehl, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-269657
DOI:	10.1103/PhysRevE.94.012138
Journal or Publication Title:	Phys. Rev. E
Volume:	94
Number:	1
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2470-0053
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DIRECTED PERCOLATION; CRITICAL-BEHAVIOR; REACTION MODEL; LATTICE; FLOW Multiple languages Physics, Fluids & Plasmas; Physics, Mathematical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26965