Papers

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Special cosmological models derived from the semiclassical Einstein equation on flat FLRW space-times

Hanno Gottschalk, Nicolai Rothe, Daniel Siemssen
December 30, 2021
semiclassical Einstein equation, vaccum like states, numerical solutions, big bang, late time de Sitter behavior
open access link Classical and Quantum Gravity, Volume 39, Issue 12, Page 125004, Year 2022

The Cosmological Semiclassical Einstein Equation as an Infinite-Dimensional Dynamical System

Hanno Gottschalk, Daniel Siemssen
September 11, 2018
open access link Ann. Henri Poincar\'e 22, 3915-3964 (2021)

Geometric Pseudodifferential Calculus on (Pseudo-)Riemannian Manifolds

Jan Dereziński, Adam Latosiński, Daniel Siemssen
June 05, 2018
open access link Annales Henri Poincar\'e 21, 1595-1635 (2020)

An Evolution Equation Approach to the Klein-Gordon Operator on Curved Spacetime

Jan Dereziński, Daniel Siemssen
September 12, 2017
Klein-Gordon, evolution operator
open access link Pure Appl. Analysis 1 (2019) 215-261

Quantum Energy Inequalities in Pre-Metric Electrodynamics

Christopher J. Fewster, Christian Pfeifer, Daniel Siemssen
September 06, 2017
open access link Phys. Rev. D 97, 025019 (2018)

Feynman Propagators on Static Spacetimes

Jan Dereziński, Daniel Siemssen
August 23, 2016
Feynman propagator, Klein-Gordon
open access link Rev. Math. Phys. 2018

The Potential in General Linear Electrodynamics: Causal Structure, Propagators and Quantization

Christian Pfeifer, Daniel Siemssen
February 02, 2016
open access link Phys. Rev. D 93, 10, 105046 (2016)

Scale-Invariant Curvature Fluctuations from an Extended Semiclassical Gravity

Nicola Pinamonti, Daniel Siemssen
February 20, 2015
QFT on curved spacetimes, semiclassical Einstein equation, inflation, cosmology
open access link Journal of Mathematical Physics 56, 022303

Global Existence of Solutions of the Semiclassical Einstein Equation for Cosmological Spacetimes

Nicola Pinamonti, Daniel Siemssen
February 01, 2015
QFT on curved spacetimes, semiclassical Einstein equation
open access link Communications in Mathematical Physics 334, 171-191

Hadamard States for the Vector Potential on Asymptotically Flat Spacetimes

Claudio Dappiaggi, Daniel Siemssen
June 28, 2011
open access link