Lifshitz scalar fields: one loop renormalization in curved backgrounds

Details Lifshitz scalar fields: one loop renormalization in curved backgrounds Lifshitz scalar fields: one loop renormalization in curved backgrounds

2011-11-07

arxiv.org/abs/1111.1662v2

Phys. Rev. D 85, 024051 (2012)

Physics

High Energy Physics

High Energy Physics - Theory

17 pages. Minor changes. Published version

Scientific paper

10.1103/PhysRevD.85.024051

We consider an interacting Lifshitz field with z=3 in a curved spacetime. We analyze the renormalizability of the theory for interactions of the form lambda phi^n, with arbitrary even n. We compute the running of the coupling constants both in the ultraviolet and infrared regimes. We show that the Lorentz violating terms generate couplings to the spacetime metric that are not invariant under general coordinate transformations. These couplings are not suppressed by the scale of Lorentz violation and therefore survive at low energies. We point out that in these theories, unless the effective mass of the field is many orders of magnitude below the scale of Lorentz violation, the coupling to the four dimensional Ricci scalar xi (4)R phi^2 does not receive large quantum corrections xi >> 1.

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