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High Energy Physics - Theory

Title: Gravitational form factors and decoupling in 2D

Abstract: We calculate and analyse non-local gravitational form factors induced by quantum matter fields in curved two-dimensional space. The calculations are performed for scalars, spinors and massive vectors by means of the covariant heat kernel method up to the second order in the curvature and confirmed using Feynman diagrams. The analysis of the ultraviolet (UV) limit reveals a generalized "running" form of the Polyakov action for a nonminimal scalar field and the usual Polyakov action in the conformally invariant cases. In the infrared (IR) we establish the gravitational decoupling theorem, which can be seen directly from the form factors or from the physical beta function for fields of any spin.
Comments: 19 pages
Subjects: High Energy Physics - Theory (hep-th); General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:1803.06948 [hep-th]
  (or arXiv:1803.06948v1 [hep-th] for this version)

Submission history

From: Omar Zanusso [view email]
[v1] Mon, 19 Mar 2018 14:24:40 GMT (111kb)