4 papers
Axial gravity and anomalies of fermions
Fiorenzo Bastianelli, Matteo Broccoli
We consider a Dirac fermion in a metric-axial-tensor (MAT) background. By regulating it with Pauli-Villars fields we analyze and compute its full anomaly structure. Appropriate lim…
Weyl fermions in a non-abelian gauge background and trace anomalies
Fiorenzo Bastianelli, Matteo Broccoli
We study the trace and chiral anomalies of Weyl fermions in a non-abelian gauge background in four dimensions. Using a Pauli-Villars regularization we identify the trace anomaly, p…
A Tale of Two Clump Masses: A New Way to Study Clump Formation in Simulations
S. M. Benincasa, J. W. Wadsley, H. M. P. Couchman +2
We present a new method to study the characteristic scales of collapse and fragmentation in galactic disks. Clump formation is seeded in simulations via controlled perturbations wi…
Electromagnetic self-force in curved spacetime: New insights from the Janis-Newman algorithm
Matteo Broccoli, Adriano Viganò
We present an original approach to compute the electromagnetic self-force acting on a static charge in Kerr spacetime. Our approach is based on an improved version of the Janis-New…