Results 41 to 50 of about 1,143 (82)

A Unified Approach to Solvable Models of Dilaton Gravity in Two-Dimensions Based on Symmetry

open access: yes, 1994
A large class of solvable models of dilaton gravity in two space-time dimensions, capable of describing black hole geometry, are analyzed in a unified way as non-linear sigma models possessing a special symmetry.
A. Bilal   +39 more
core   +1 more source

Trace Anomaly, Massless Scalars and the Gravitational Coupling of QCD

open access: yes, 2010
The anomalous effective action describing the coupling of gravity to a non-abelian gauge theory can be determined by a variational solution of the anomaly equation, as shown by Riegert long ago.
Armillis, Roberta   +2 more
core   +1 more source

Conformal Invariance, Dynamical Dark Energy and the CMB

open access: yes, 2011
General Relativity receives quantum corrections relevant at cosmological distance scales from the conformal scalar degrees of freedom required by the trace anomaly of the quantum stress tensor in curved space.
Mottola, Emil
core  

Anomalous effects of dense matter under rotation

open access: yes, 2017
We study the anomaly induced effects of dense baryonic matter under rotation. We derive the anomalous terms that account for the chiral vortical effect in the low-energy effective theory for light Nambu-Goldstone modes.
Huang, Xu-Guang   +2 more
core   +1 more source

The Renormalization Group and the Effective Potential in a Curved Spacetime with Torsion

open access: yes, 1993
The renormalization group method is employed to study the effective potential in curved spacetime with torsion. The renormalization-group improved effective potential corresponding to a massless gauge theory in such a spacetime is found and in this way a
Bytsenko, A. A.   +2 more
core   +1 more source

c = 1 Two Dimensional Quantum Gravity

open access: yes, 1992
The continuum (Liouville) approach to the two-dimensional (2-D) quantum gravity is reviewed with particular attention to the $c=1$ conformal matter coupling, and new results on a related problem of dilaton gravity are reported. After finding the physical
Abdalla   +88 more
core   +1 more source

Massless Scalar Degrees of Freedom in QCD and in the Electroweak Sector from the Trace Anomaly

open access: yes, 2012
The interaction of QCD and electroweak sector with gravity is characterized by the generation of a massless pole in a specific form factor present in the 1-loop effective action.
Rose, Luigi Delle, Serino, Mirko
core   +1 more source

Comments on Anomaly Cancellations by Pole Subtractions and Ghost Instabilities with Gravity

open access: yes, 2011
We investigate some aspects of anomaly cancellation realized by the subtraction of an anomaly pole, stressing on some of its properties in superspace. In a local formulation these subtractions can be described in terms of a physical scalar, an axion and ...
A R Fazio   +20 more
core   +3 more sources

Perturbative loop corrections and nonlocal gravity

open access: yes, 2016
Nonlocal gravity has been shown to provide a phenomenologically viable infrared modification of GR. A natural question is whether the required nonlocality can emerge from perturbative quantum loop corrections due to light particles.
Maggiore, Michele
core   +1 more source

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