The collapse of the wave function in the joint metric-matter quantization for inflation
It has been argued that the standard inflationary scenario suffers from a serious deficiency as a model for the origin of the seeds of cosmic structure: it can not truly account for the transition from an early homogeneous and isotropic stage to another one lacking such symmetries. The issue has oft...
Guardado en:
| Publicado: |
2012
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v44_n12_p2965_DiezTejedor http://hdl.handle.net/20.500.12110/paper_00017701_v44_n12_p2965_DiezTejedor |
| Aporte de: |
| id |
paper:paper_00017701_v44_n12_p2965_DiezTejedor |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_00017701_v44_n12_p2965_DiezTejedor2023-06-08T14:21:37Z The collapse of the wave function in the joint metric-matter quantization for inflation Cosmology Inflation Quantum foundations Quantum gravity It has been argued that the standard inflationary scenario suffers from a serious deficiency as a model for the origin of the seeds of cosmic structure: it can not truly account for the transition from an early homogeneous and isotropic stage to another one lacking such symmetries. The issue has often been thought as a standard instance of the "quantum measurement problem", but as has been recently argued by some of us, that quagmire reaches a critical level in the cosmological context of interest here. This has lead to a proposal in which the standard paradigm is supplemented by a hypothesis concerning the self-induced dynamical collapse of the wave function, as representing the physical mechanism through which such change of symmetry is brought forth. This proposal was originally formulated within the context of semiclassical gravity. Here we investigate an alternative realization of such idea implemented directly within the standard analysis in terms of a quantum field jointly describing the inflaton and metric perturbations, the so called Mukhanov-Sasaki variable. We show that even though the prescription is quite different, the theoretical predictions include some deviations from the standard ones, which are indeed very similar to those found in the early studies. We briefly discuss the differences between the two prescriptions, at both, the conceptual and practical levels. © 2012 Springer Science+Business Media, LLC. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v44_n12_p2965_DiezTejedor http://hdl.handle.net/20.500.12110/paper_00017701_v44_n12_p2965_DiezTejedor |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cosmology Inflation Quantum foundations Quantum gravity |
| spellingShingle |
Cosmology Inflation Quantum foundations Quantum gravity The collapse of the wave function in the joint metric-matter quantization for inflation |
| topic_facet |
Cosmology Inflation Quantum foundations Quantum gravity |
| description |
It has been argued that the standard inflationary scenario suffers from a serious deficiency as a model for the origin of the seeds of cosmic structure: it can not truly account for the transition from an early homogeneous and isotropic stage to another one lacking such symmetries. The issue has often been thought as a standard instance of the "quantum measurement problem", but as has been recently argued by some of us, that quagmire reaches a critical level in the cosmological context of interest here. This has lead to a proposal in which the standard paradigm is supplemented by a hypothesis concerning the self-induced dynamical collapse of the wave function, as representing the physical mechanism through which such change of symmetry is brought forth. This proposal was originally formulated within the context of semiclassical gravity. Here we investigate an alternative realization of such idea implemented directly within the standard analysis in terms of a quantum field jointly describing the inflaton and metric perturbations, the so called Mukhanov-Sasaki variable. We show that even though the prescription is quite different, the theoretical predictions include some deviations from the standard ones, which are indeed very similar to those found in the early studies. We briefly discuss the differences between the two prescriptions, at both, the conceptual and practical levels. © 2012 Springer Science+Business Media, LLC. |
| title |
The collapse of the wave function in the joint metric-matter quantization for inflation |
| title_short |
The collapse of the wave function in the joint metric-matter quantization for inflation |
| title_full |
The collapse of the wave function in the joint metric-matter quantization for inflation |
| title_fullStr |
The collapse of the wave function in the joint metric-matter quantization for inflation |
| title_full_unstemmed |
The collapse of the wave function in the joint metric-matter quantization for inflation |
| title_sort |
collapse of the wave function in the joint metric-matter quantization for inflation |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017701_v44_n12_p2965_DiezTejedor http://hdl.handle.net/20.500.12110/paper_00017701_v44_n12_p2965_DiezTejedor |
| _version_ |
1768544203740020736 |