57 citations · 237 across the 26 of their papers we have counts for
25 papers
Pair creation in weak gravity and gauge backgrounds: spinning fields and binary stars
S. A. Franchino-Viñas, N. Varacalli, O. Zanusso
We study pair creation for quantum fields of spin , , and in the presence of weak gravitational and gauge backgrounds. Using resummed heat-kernel techniques, we obtain…
Conformally-flat gravitational analogues to the Schwinger effect
S. A. Franchino-Viñas, F. D. Mazzitelli, S. Pla
We study particle creation for scalar fields in conformally flat spacetimes using resummed heat-kernel techniques. We make use of an analogy between quantum scalar fields in confor…
Strong-field regime within effective field theory
Sebastián Franchino-Viñas, Jérémie Quevillon, Diego Saviot
Building upon the Covariant Derivative Expansion, we develop a method to compute effective actions that is able to capture non-perturbative effects induced by strong background fie…
Formal developments in curved momentum space: the quantum field theory roadmap
S. A. Franchino-Viñas
We advocate that the dual picture of spacetime noncommutativity , i.e. the existence of a curved momentum space, could be a way out to solve some of the open conceptual problems in…
Heat Kernels and Resummations: the Spinor Case
S. A. Franchino-Viñas, C. García-Pérez, F. D. Mazzitelli +2
Among the available perturbative approaches in quantum field theory, heat kernel techniques provide a powerful and geometrically transparent framework for computing effective actio…
Resummed effective actions and heat kernels: the Worldline approach and Yukawa assisted pair creation
Filippo Fecit, Sebastián Franchino-Viñas, Francisco D. Mazzitelli
We adapt the Worldline Formalism to obtain resummed expressions for the effective action and the heat kernel of a quantum scalar field coupled to a Yukawa background. The resummati…
Strong-field resummed heat kernels and effective actions: inhomogeneous fields
S. A. Franchino-Viñas, C. García-Pérez, F. D. Mazzitelli +3
We study the strong-field limit of a theory involving a quantum scalar field coupled to a vector background, which can be either an electromagnetic field or a non-gauge field coupl…
Comment on `Index-free Heat Kernel Coefficients'
S. A. Franchino-Viñas
The article by Anton E. M. van de Ven, Class. Quantum Grav. \textbf{15} (1998), is one of the fundamental references for higher-order heat kernel coefficients in curved backgrounds…
Resummed heat kernel and effective action for Yukawa and QED
S. A. Franchino-Viñas, C. García-Pérez, F. D. Mazzitelli +2
In this letter, we prove the existence of resummed expressions for the diagonal of the heat kernel and the effective action of a quantum field which interacts with a scalar or an e…
Universal definition of the non-conformal trace anomaly
Renata Ferrero, Sebastián A. Franchino-Viñas, Markus B. Fröb +1
We show that there exists a generalized, universal notion of the trace anomaly for theories which are not conformally invariant at the classical level. The definition is suitable f…
Trace anomalies for Weyl fermions: too odd to be true?
S. Abdallah, S. A. Franchino-Viñas, M. Fröb
We review recent discussions regarding the parity-odd contribution to the trace anomaly of a chiral fermion. We pay special attention to the perturbative approach in terms of Feynm…
Local Neumann semitransparent layers: resummation, pair production and duality
N. Ahmadiniaz, S. A. Franchino-Viñas, L. Manzo +1
We consider local semitransparent Neumann boundary conditions for a quantum scalar field as imposed by a quadratic coupling to a source localized on a flat codimension-one surface.…
Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for
S. Abdallah, S. A Franchino-Viñas, M. B. Fröb
We revisit the conformal anomaly for a Weyl fermion in four dimensions that has generated some debate recently. We employ a perturbative expansion for the metric around Minkowski s…
Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
A. Addazi, J. Alvarez-Muniz, R. Alves Batista +157
The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experim…
Quantum vacuum fluctuations and the principle of virtual work in inhomogeneous backgrounds
S. A. Franchino-Viñas, M. N. Mantiñan, F. D. Mazzitelli
We discuss several aspects of the stress-energy tensor for a quantum scalar field in an inhomogeneous background, the latter being modeled by a variable mass. Using a perturbative…
The cosmological lithium problem, varying constants and the tension
S. A. Franchino-Viñas, M. E. Mosquera
In this work we show that the cosmological lithium problem and the tension could be eased at the same time by allowing variations in the fundamental constants. We compute the…
The Snyder-de Sitter Scalar Quantum Field Theory in D=2
S. A. Franchino-Viñas, S. Mignemi
We study the two-dimensional version of a quartic self-interacting quantum scalar field on a curved and noncommutative space (Snyder-de Sitter). We show that the model is renormali…
Trace anomaly for Weyl fermions using the Breitenlohner-Maison scheme for
S. Abdallah, S. A. Franchino-Viñas, M. B. Fröb
We revisit the computation of the trace anomaly for Weyl fermions using dimensional regularization. For a consistent treatment of the chiral gamma matrix in dimensional regul…
Effective action for delta potentials: spacetime-dependent inhomogeneities and Casimir self-energy
S. A. Franchino-Viñas, F. D. Mazzitelli
We study the vacuum fluctuations of a quantum scalar field in the presence of a thin and inhomogeneous flat mirror, modeled with a delta potential. Using Heat-Kernel techniques, we…
Asymptotic freedom for QFT in Snyder-de Sitter space
Sebastián A. Franchino-Viñas, Salvatore Mignemi
We analyze the model of a self-interacting scalar field theory in Snyder-de Sitter space. After analytically computing the one-loop beta functions {in the small nonco…
Vacuum effective actions and mass-dependent renormalization in curved space
Sebastián A. Franchino-Viñas, Tibério de Paula Netto, Omar Zanusso
We review past and present results on the non-local form-factors of the effective action of semiclassical gravity in two and four dimensions computed by means of a covariant expans…
Form factors and decoupling of matter fields in four-dimensional gravity
Sebastián A. Franchino-Viñas, Tibério de Paula Netto, Ilya L. Shapiro +1
We extend previous calculations of the non-local form factors of semiclassical gravity in to include the Einstein-Hilbert term. The quantized fields are massive scalar, fermio…
Worldline Formalism in Snyder Spaces
S. A. Franchino-Viñas, S. Mignemi
We study the model for a scalar field in a linearization of the Snyder model, using the methods of the Worldline Formalism. Our main result is a master equation for t…
Thermodynamics in the NC disc
S. A. Franchino-Viñas, P. Pisani
We study the thermodynamics of a scalar field on a noncommutative disc implementing the boundary as the limit case of an interaction with an appropriately chosen confining backgrou…