# Nonlinear field space cosmology

@article{Mielczarek2017NonlinearFS, title={Nonlinear field space cosmology}, author={Jakub Mielczarek and Tomasz Trze'sniewski}, journal={Physical Review D}, year={2017}, volume={96}, pages={043522} }

We consider the FRW cosmological model in which the matter content of universe (playing a role of inflaton or quintessence) is given by a novel generalization of the massive scalar field. The latter is a scalar version of the recently introduced Nonlinear Field Space Theory (NFST), where physical phase space of a given field is assumed to be compactified at large energies. For our analysis we choose the simple case of a field with the spherical phase space and endow it with the generalized…

## 5 Citations

### Minisuperspace model of compact phase space gravity

- PhysicsPhysical Review D
- 2019

The kinematical phase space of classical gravitational field is flat (affine) and unbounded. Because of this, field variables may tend to infinity, leading to appearance of singularities, which…

### Spin-Field Correspondence

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In the recent article Phys. Lett. B 2016, 759, 424–429, a new class of field theories called Nonlinear Field Space Theory was proposed. In this approach, the standard field theories are considered as…

### Klein–Gordon field from the XXZ Heisenberg model

- PhysicsInternational Journal of Modern Physics D
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We examine the recently introduced idea of Spin-Field Correspondence (SFC) focusing on the example of the spin system described by the XXZ Heisenberg model with external magnetic field. The…

### Towards the map of quantum gravity

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In this paper we point out some possible links between different approaches to quantum gravity and theories of the Planck scale physics. In particular, connections between loop quantum gravity,…

### General-relativistic spin system

- PhysicsPhysical Review D
- 2020

The models of spin systems defined on Euclidean space provide powerful machinery for studying a broad range of condensed matter phenomena. While the non-relativistic effective description is…

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