Universität zu Köln

Meng, Tobias, Rosch, Achim ORCID: 0000-0002-6586-5721 and Garst, Markus ORCID: 0000-0001-5390-3316 (2012). Quantum criticality with multiple dynamics. Phys. Rev. B, 86 (12). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Full text not available from this repository.

Abstract

Quantum critical systems with multiple dynamics possess not only one but several time scales, tau(i) similar to xi(zi), which diverge with the correlation length.. We investigate how scaling predictions are modified for the simplest case of multiple dynamics characterized by two dynamical critical exponents, z(>) and z(<). We argue that one should distinguish the case of coupled and decoupled multiple dynamic scaling depending on whether there exists a scaling exponent which depends on both z(i). As an example, we study generalized Phi(4) theories with multiple dynamics below their upper critical dimension, d + z(<) < 4. We identify under which condition coupled scaling is generated. In this case the interaction of quantum and classical fluctuations leads to an emergent dynamical exponent, z(e) = z(>)/nu(z(>)-z(<))+1

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Meng, Tobias UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosch, Achim UNSPECIFIED orcid.org/0000-0002-6586-5721 UNSPECIFIED Garst, Markus UNSPECIFIED orcid.org/0000-0001-5390-3316 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-483209
DOI:	10.1103/PhysRevB.86.125107
Journal or Publication Title:	Phys. Rev. B
Volume:	86
Number:	12
Date:	2012
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48320