activity
19942025
most citedThe quantum structure of spacetime at the Planck scale and quantum fields

1.4k citations · 4k across the 57 of their papers we have counts for

collaborators

60 papers

math-ph2025

Perturbative algebraic quantum field theory and beyond

Romeo Brunetti, Klaus Fredenhagen, Kasia Rejzner

In this review, we summarize the main ideas of perturbative algebraic quantum field theory, which is a rigorous framework combining some of the Haag-Kastler axioms with perturbativ…

math-ph2025

Thermodynamical aspects of fermions in external electromagnetic fields

Romeo Brunetti, Klaus Fredenhagen, Nicola Pinamonti

The thermodynamics of Dirac fields under the influence of external electromagnetic fields is studied. For perturbations which act only for finite time, the influence of the perturb…

math-ph2023★ 2 cited

Arrow of time and quantum physics

Detlev Buchholz, Klaus Fredenhagen

Based on the hypothesis that the (non-reversible) arrow of time is intrinsic in any system, no matter how small, the consequences are discussed. Within the framework of local quant…

math-ph2023★ 1 cited

Algebraic quantum field theory: objectives, methods, and results

Detlev Buchholz, Klaus Fredenhagen

Algebraic quantum field theory is a general mathematical framework for relativistic quantum physics, based on the theory of operator algebras. It comprises all observable and opera…

gr-qc2022

Locally covariant approach to effective quantum gravity

Romeo Brunetti, Klaus Fredenhagen, Kasia Rejzner

Despite the fact that quantum gravity is non-renormalisable, a consistent and mathematically rigorous construction of a perturbation series is possible. This is based on the use of…

math-ph2022

Unitary, anomalous Master Ward Identity and its connections to the Wess-Zumino condition, BV formalism and -algebras

Romeo Brunetti, Michael Dütsch, Klaus Fredenhagen +1

The C*-algebraic construction of QFT by Buchholz and one of us relies on the causal structure of spacetime and a classical Lagrangian. In one of our previous papers we have introdu…