Schwinger-Dyson approach for a Lifshitz-type Yukawa model

Alexandre, J; Farakos, K; Pasipoularides, P; Tsapalis, A

dc.contributor.author	Alexandre, J	en
dc.contributor.author	Farakos, K	en
dc.contributor.author	Pasipoularides, P	en
dc.contributor.author	Tsapalis, A	en
dc.date.accessioned	2014-03-01T01:34:28Z
dc.date.available	2014-03-01T01:34:28Z
dc.date.issued	2010	en
dc.identifier.issn	1550-7998	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20747
dc.subject	Critical Exponent	en
dc.subject	Effective Action	en
dc.subject	Field Theory	en
dc.subject	Kinetics	en
dc.subject	Quantum Correction	en
dc.subject	First Order	en
dc.subject	non perturbative	en
dc.subject	schwinger dyson	en
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Particles & Fields	en
dc.title	Schwinger-Dyson approach for a Lifshitz-type Yukawa model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevD.81.045002	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevD.81.045002	en
heal.identifier.secondary	045002	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	We consider a 3 + 1 dimensional field theory at a Lifshitz point for a dynamical critical exponent z = 3, with a scalar and a fermion field coupled via a Yukawa interaction. Using the nonperturbative Schwinger-Dyson approach we calculate quantum corrections to the effective action. We demonstrate that a first order derivative kinetic term as well as a mass term for the fermion arise dynamically. This signals the restoration of Lorentz symmetry in the IR regime of the single fermion model, although for theories with more than one fermionic species such a conclusion will require fine-tuning of couplings. The limitations of the model and our approach are discussed.	en
heal.publisher	AMER PHYSICAL SOC	en
heal.journalName	PHYSICAL REVIEW D	en
dc.identifier.doi	10.1103/PhysRevD.81.045002	en
dc.identifier.isi	ISI:000275898500093	en
dc.identifier.volume	81	en
dc.identifier.issue	4	en