English

Matter one-loop logarithms and homogeneous TTNC scale response of Lifshitz black branes

High Energy Physics - Theory 2026-05-20 v1

Abstract

We compute the logarithmic one-loop matter contribution to the thermodynamics and homogeneous TTNC scale response of a four-dimensional Lifshitz black brane. The background is the neutral planar member of the analytic Einstein--Maxwell--dilaton Lifshitz black-brane family, while the quantum fields are treated as probes: a real scalar with arbitrary mass and nonminimal curvature coupling, a four-component Dirac spinor, and an Abelian Maxwell field with its Faddeev--Popov ghosts. For each spin sector, the logarithmic coefficient separates into a smooth radial heat-kernel contribution, governed by C1\mathcal{C}_1, and a horizon-localized conical contribution, governed by Wh\mathcal{W}_h. The smooth coefficient controls the source-induced homogeneous projection of the TTNC Weyl Ward identity, whereas the logarithmic thermal entropy is controlled by Ctherm=C1+zL2Wh\mathcal{C}_{\rm therm}=\mathcal{C}_1+zL^2\mathcal{W}_h. We give closed expressions for C1\mathcal{C}_1, Wh\mathcal{W}_h, and Ctherm\mathcal{C}_{\rm therm} in the scalar, Dirac, and Maxwell probe sectors, identify the gauge-field contact contribution in the conical entropy, and verify that the smooth source response vanishes in the relativistic planar z=1z=1 limit while the standard horizon heat-kernel entropy coefficient remains.

Keywords

Cite

@article{arxiv.2605.18790,
  title  = {Matter one-loop logarithms and homogeneous TTNC scale response of Lifshitz black branes},
  author = {Yingnan Xu and Shuangshuang Chu},
  journal= {arXiv preprint arXiv:2605.18790},
  year   = {2026}
}

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15 pages