# The Lambda CDM-model in quantum field theory on curved spacetime and Dark Radiation

@article{Hack2013TheLC, title={The Lambda CDM-model in quantum field theory on curved spacetime and Dark Radiation}, author={Thomas-Paul Hack}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2013} }

In the standard model of cosmology, the universe is described by a Robertson-Walker spacetime, while its matter/energy content is modeled by a perfect fluid with three components corresponding to matter/dust, radiation and a cosmological constant. On the other hand, in particle physics matter and radiation are described in terms of quantum field theory on Minkowski spacetime. We unify these seemingly different theoretical frameworks by analysing the standard model of cosmology from first…

## 12 Citations

### Cosmological Applications of Algebraic Quantum Field Theory

- Physics
- 2015

Quantum field theory on curved spacetime is a generalisation of quantum field theory in flat spacetime which is expected to be the proper fundamental description of non–trivial physical phenomena in…

### Quantum field theory on curved spacetime and the standard cosmological model

- Physics
- 2013

The aim of this review is to outline a full route from the fundamental principles of algebraic quantum field theory on curved spacetime in its present-day form to explicit phenomenological…

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

- PhysicsClassical and Quantum Gravity
- 2022

This article presents numerical work on a special case of the cosmological semiclassical Einstein equation (SCE). The SCE describes the interaction of relativistic quantum matter by the expected…

### Curvature fluctuations on asymptotically de Sitter spacetimes via the semiclassical Einsteinʼs equations

- Physics, Mathematics
- 2014

It has been proposed recently to consider in the framework of cosmology an extension of the semiclassical Einsteinʼs equations in which the Einstein tensor is considered as a random function. This…

### The Semiclassical Einstein Equation on Cosmological Spacetimes

- Physics
- 2015

The subject of this thesis is the coupling of quantum fields to a classical gravitational background in a semiclassical fashion. It contains a thorough introduction into quantum field theory on…

### Cosmological constant problem and renormalized vacuum energy density in curved background

- Physics
- 2016

The current vacuum energy density observed as dark energy ρdark≃ 2.5×10−47 GeV4 is unacceptably small compared with any other scales. Therefore, we encounter serious fine-tuning problem and…

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

- Physics, Mathematics
- 2015

We study the solutions of the semiclassical Einstein equation in flat cosmological spacetimes driven by a massive conformally coupled scalar field. In particular, we show that it is possible to give…

### Quantum Field Theory on Curved Backgrounds -- A Primer

- Mathematics
- 2013

Goal of this paper is to introduce the algebraic approach to quantum field theory on curved backgrounds. Based on a set of axioms, first written down by Haag and Kastler, this method consists of a…

### Vacuum energy and cosmological evolution

- Physics
- 2014

An expanding universe is not expected to have a static vacuum energy density. The so-called cosmological constant $\Lambda$ should be an approximation, certainly a good one for a fraction of a Hubble…

### Existence and Uniqueness of Solutions of the Semiclassical Einstein Equation in Cosmological Models

- MathematicsAnnales Henri Poincaré
- 2021

We prove existence and uniqueness of solutions of the semiclassical Einstein equation in flat cosmological spacetimes driven by a quantum massive scalar field with arbitrary coupling to the scalar…

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