94 citations · 234 across the 23 of their papers we have counts for
25 papers
On the Conicality of Spacetimes
Eric Ling, Claudio F. Paganini
The notion of conicality, recently introduced in [2403.00916], captures the extent to which the joint future of a finite set in spacetime uniquely determines the generating subset…
Quantum Reference Frames and Correlation Geometry
Claudio F. Paganini
The aim of this paper is to provide a largely self-contained, compact and comprehensible introduction to the basic ideas behind correlation geometry, which underlies the theory of…
Causal Fermion Systems, Non-Commutative Geometry and Generalized Trace Dynamics
Shane Farnsworth, Felix Finster, Claudio F. Paganini +1
We compare the structures and methods in the theory of causal fermion systems with generalized trace dynamics and non-commutative geometry. Although the three theories differ on ma…
A Collapse Mechanism Without Heating
Felix Finster, Claudio F. Paganini
It is shown that the collapse model derived from the theory of causal fermion systems does not give rise to a heating of the probe, up to higher order corrections in the Planck len…
Pseudodifferential Weyl calculus on vector bundles
Lars Andersson, Benjamin Moser, Marius A. Oancea +2
We develop a geometric framework for Weyl quantization on pseudo-Riemannian manifolds, in which pseudodifferential operators act on sections of vector bundles equipped with pseudo-…
Causal Fermion Systems: Spacetime as the web of correlations of a many-body quantum system
Patrick Fischer, Claudio F. Paganini
In this paper, we argue that spacetime in causal fermion systems can be understood as the web of correlations of a many-body quantum system.This argument highlights the fact that c…
Gravitation as a Statistical Theory on the Light Cone
José M. Isidro, Claudio F. Paganini, Alessandro Pesci
In this paper, we will explore Padmanabhan's mesoscopic, statistical approach to gravity [62] with a twist. The general picture of his approach is that spacetime is made of large n…
Causal Fermion Systems as an Effective Collapse Theory
Felix Finster, Johannes Kleiner, Claudio F. Paganini
It is shown that, in the non-relativistic limit, causal fermion systems give rise to an effective collapse theory. The nonlinear and stochastic correction terms to the Schrödinger…
Causal Fermion Systems and Octonions
Felix Finster, Niels G. Gresnigt, J. M. Isidro +3
We compare the structures and methods in the theory of causal fermion systems with approaches to fundamental physics based on division algebras, in particular the octonions. We fin…
Theoretically motivated dark electromagnetism as the origin of relativistic MOND
Felix Finster, J. M. Isidro, Claudio F. Paganini +1
The present paper is a modest attempt to initiate the research program outlined in this abstract. We propose that general relativity and relativistic MOND (RelMOND) are analogues o…
Modified Measures as an Effective Theory for Causal Fermion Systems
Felix Finster, Eduardo Guendelman, Claudio F. Paganini
We compare the structures of the theory of causal fermion systems (CFS), an approach to unify quantum theory with general relativity (GR), with those of modified measure theories (…
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…
A Mechanism of Baryogenesis for Causal Fermion Systems
Felix Finster, Maximilian Jokel, Claudio F. Paganini
It is shown that the theory of causal fermion systems gives rise to a novel mechanism of baryogenesis. This mechanism is worked out computationally in globally hyperbolic spacetime…
EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade
R. Alves Batista, M. A. Amin, G. Barenboim +134
Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the…
Incompatibility of Frequency Splitting and Spatial Localization: A Quantitative Analysis of Hegerfeldt's Theorem
Felix Finster, Claudio F. Paganini
We prove quantitative versions of the following statement: If a solution of the 1+1-dimensional wave equation has spatially compact support and consists mainly of positive frequenc…
No Events on Closed Causal Curves
Claudio F. Paganini
We introduce the Causal Compatibility Conjecture for the Events, Trees, Histories (ETH) approach to Quantum Theory (QT) in the semi-classical setting. We then prove that under the…
Causal Fermion Systems and the ETH Approach to Quantum Theory
Felix Finster, Jürg Fröhlich, Marco Oppio +1
After reviewing the theory of "causal fermion systems" (CFS theory) and the "Events, Trees, and Histories Approach" to quantum theory (ETH approach), we compare some of the mathema…
Gravitational spin Hall effect of light
Marius A. Oancea, Jérémie Joudioux, I. Y. Dodin +3
The propagation of electromagnetic waves in vacuum is often described within the geometrical optics approximation, which predicts that wave rays follow null geodesics. However, thi…
An overview of the gravitational spin Hall effect
Marius A. Oancea, Claudio F. Paganini, Jérémie Joudioux +1
In General Relativity, the propagation of electromagnetic waves is usually described by the vacuum Maxwell's equations on a fixed curved background. In the limit of infinitely high…
Proposal 42 -- A new Storyline for the Universe based on the Causal Fermion Systems Framework
Claudio F Paganini
Based on preliminary results from the Causal Fermion Systems framework regarding the matter-antimatter asymmetry in the universe, I propose a novel story line for the universe that…
The to zero limit of spacetimes and its physical interpretation
Mark Bugden, Claudio Paganini
We study the behaviour of Schwarzschild-de Sitter spacetime and show, according to Geroch's notion of spacetime limits, that it converges to the Schwarzschild spacetime. W…
Smoothness of the future and past trapped sets in Kerr-Newman-Taub-NUT spacetimes
Claudio F. Paganini, Marius A. Oancea
We consider the sets of future/past trapped null geodesics in the exterior region of a sub-extremal Kerr-Newman-Taub-NUT spacetime. We show that, from the point of view of any time…
The Fingerprints of Black Holes - Shadows and their Degeneracies
Marc Mars, Claudio F. Paganini, Marius A. Oancea
We show that, away from the axis of symmetry, no continuous degeneration exists between the shadows of observers at any point in the exterior region of any Kerr-Newman black hole s…
Characterization of Null Geodesics on Kerr Spacetimes
Claudio F. Paganini, Blazej Ruba, Marius A. Oancea
We consider null geodesics in the exterior region of a subextremal Kerr spacetime. We show that most well-known fundamental properties of null geodesics can be represented on one p…