Remarks on the Chern-Simons photon term in the QED description of graphene

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Author(s):	Dudal, David ; Mizher, Ana Julia ; Pais, Pablo Total Authors: 3
Document type:	Journal article
Source:	PHYSICAL REVIEW D; v. 98, n. 6, p. 11-pg., 2018-09-10.
Abstract
We revisit the Coleman-Hill theorem in the context of reduced planar QED. Using the global U(1) Ward identity for this nonlocal but still gauge-invariant theory, we can confirm that the topological piece of the photon self-energy at zero momentum does not receive further quantum corrections apart from the potential one-loop contribution, even when considering the Lorentz-noninvariant case due to the Fermi velocity v(F) < c. This is of relevance to probe possible time parity odd dynamics in a planar sheet of graphene which has an effective description in terms of (2 + 1)-dimensional planar reduced QED. (AU)

FAPESP's process:	16/12705-7 - Magnetic fields in heavy ion collisions: effects on obserbables
Grantee:	Ana Júlia Silveira Mizher
Support Opportunities:	Scholarships in Brazil - Post-Doctoral