805 citations · 4.8k across the 65 of their papers we have counts for
14 papers · 1 filter
Axions and Superfluidity in Weyl Semimetals
Emil Mottola, Andrey V. Sadofyev, Andreas Stergiou
An effective field theory (EFT) for dynamical axions in Weyl semimetals (WSMs) is presented. A pseudoscalar axion excitation is predicted in WSMs at sufficiently low temperatures,…
The Effective Theory of Gravity and Dynamical Vacuum Energy
Emil Mottola
Gravity and general relativity are considered as an Effective Field Theory at low energies and macroscopic distances. The effective action of the conformal anomaly of light or mass…
Chiral Waves on the Fermi-Dirac Sea: Quantum Superfluidity and the Axial Anomaly
Emil Mottola, Andrey V. Sadofyev
We show that as a result of the axial anomaly, massless fermions at zero temperature define a relativistic quantum superfluid. The anomaly pole implies the existence of a gapless C…
TTT in CFT: Trace Identities and the Conformal Anomaly Effective Action
Claudio Coriano, Matteo Maria Maglio, Emil Mottola
Stress-energy correlation functions in a general Conformal Field Theory (CFT) in four dimensions are described in a fully covariant approach, as metric variations of the quantum ef…
Fermion Pairing and the Scalar Boson of the 2D Conformal Anomaly
Daniel N. Blaschke, Raúl Carballo-Rubio, Emil Mottola
We analyze the phenomenon of fermion pairing into an effective boson associated with anomalies and the anomalous commutators of currents bilinear in the fermion fields. In two spac…
Solving the Conformal Constraints for Scalar Operators in Momentum Space and the Evaluation of Feynman's Master Integrals
Claudio Coriano, Luigi Delle Rose, Emil Mottola +1
We investigate the structure of the constraints on three-point correlation functions emerging when conformal invariance is imposed in momentum space and in arbitrary space-time dim…
Graviton Vertices and the Mapping of Anomalous Correlators to Momentum Space for a General Conformal Field Theory
Claudio Coriano, Luigi Delle Rose, Emil Mottola +1
We investigate the mapping of conformal correlators and of their anomalies from configuration to momentum space for general dimensions, focusing on the anomalous correlators ,…
The Trace Anomaly and Massless Scalar Degrees of Freedom in Gravity
Maurizio Giannotti, Emil Mottola
The trace anomaly of quantum fields in electromagnetic or gravitational backgrounds implies the existence of massless scalar poles in physical amplitudes involving the stress-energ…
Short distance and initial state effects in inflation: stress tensor and decoherence
Paul R. Anderson, Carmen Molina-Paris, Emil Mottola
We present a consistent low energy effective field theory framework for parameterizing the effects of novel short distance physics in inflation, and their possible observational si…
Fractal Geometry of Quantum Spacetime at Large Scales
Ignatios Antoniadis, Pawel O. Mazur, Emil Mottola
We compute the intrinsic Hausdorff dimension of spacetime at the infrared fixed point of the quantum conformal factor in 4D gravity. The fractal dimension is defined by the appropr…
Physical States of the Quantum Conformal Factor
Ignatios Antoniadis, Pawel O. Mazur, Emil Mottola
The conformal factor of the spacetime metric becomes dynamical due to the trace anomaly of matter fields. Its dynamics is described by an effective action which we quantize by cano…
Quantum Diffeomorphisms and Conformal Symmetry
Ignatios Antoniadis, Pawel O. Mazur, Emil Mottola
We analyze the constraints of general coordinate invariance for quantum theories possessing conformal symmetry in four dimensions. The character of these constraints simplifies eno…
Scaling behavior of quantum four-geometries
I. Antoniadis, P. O. Mazur, E. Mottola
We propose that large quantum fluctuations of the conformal factor drastically modify classical general relativity at cosmological distance scales, resulting in a scale invariant p…
Conformal Symmetry and Central Charges in 4 Dimensions
I. Antoniadis, P. O. Mazur, E. Mottola
The trace anomaly of matter in curved space generates an effective action for the conformal factor of the metric tensor in dimensions, analogous to the Polyakov action for $D…