activity
20222025
most citedComparing the spectrum of Schrödinger operators on quantum graphs

6 citations · 10 across the 10 of their papers we have counts for

collaborators

11 papers

math.SP2025

On the heat content of compact quantum graphs

Patrizio Bifulco, Delio Mugnolo

We study the heat content for Laplacians on compact, finite metric graphs with Dirichlet conditions imposed at the "boundary" (i.e., a given set of vertices). We prove a closed for…

math.SP2025

Faber-Krahn inequality for the heat content on quantum graphs via random walk expansion

Patrizio Bifulco, Matthias Täufer

We study the heat content on quantum graphs and investigate whether an analogon of the Rayleigh-Faber-Krahn inequality holds. This means that heat content at time among graphs…

math.SP2025

Spectral comparison results for Laplacians on discrete graphs

Patrizio Bifulco, Joachim Kerner, Christian Rose

In the recent literature, various authors have studied spectral comparison results for Schrödinger operators with discrete spectrum in different settings including Euclidean domain…

math.SP2024

A modified local Weyl law and spectral comparison results for -coupling conditions

Patrizio Bifulco, Joachim Kerner

We study Schrödinger operators on compact finite metric graphs subject to -coupling conditions. Based on a novel modified local Weyl law, we derive an explicit expression for t…

math.SP2023

On the -torsional rigidity of combinatorial graphs

Patrizio Bifulco, Delio Mugnolo

We study the -\emph{torsion function} and the corresponding -\emph{torsional rigidity} associated with -Laplacians and, more generally, -Schrödinger operators, for $1<p…

math.SP2023★ 1 cited

Some spectral comparison results on infinite quantum graphs

Patrizio Bifulco, Joachim Kerner

In this paper we establish spectral comparison results for Schrödinger operators on a certain class of infinite quantum graphs, using recent results obtained in the finite setting.…

math.SP2023★ 2 cited

A note on Ambarzumian's theorem for quantum graphs

Patrizio Bifulco, Joachim Kerner

Based on the main result presented in a recent paper, we derive Ambarzumian-type theorems for Schrödinger operators defined on quantum graphs. We recover existing results such as t…

math.FA2023

On the Lipschitz continuity of the heat kernel

Patrizio Bifulco, Delio Mugnolo

We study integral kernels of strongly continuous semigroups on Lebesgue spaces over metric measure spaces. Based on semigroup smoothing properties and abstract Morrey-type inequali…

math.CO2023

On the surface area of graphs, related connectivity measures and spectral estimates

Patrizio Bifulco, Joachim Kerner

In this note we elaborate on some notions of surface area for discrete graphs which are closely related to the inverse degree. These notions then naturally lead to associated conne…

math-ph2022★ 6 cited

Comparing the spectrum of Schrödinger operators on quantum graphs

Patrizio Bifulco, Joachim Kerner

We study Schrödinger operators on compact finite metric graphs subject to -coupling and standard boundary conditions. We compare the -th eigenvalues of those self-adjoint rea…

econ.GN2022★ 1 cited

Single and Attractive: Uniqueness and Stability of Economic Equilibria under Monotonicity Assumptions

Patrizio Bifulco, Jochen Glück, Oliver Krebs +1

This paper characterizes equilibrium properties of a broad class of economic models that allow multiple heterogeneous agents to interact in heterogeneous manners across several mar…