Quantum entanglement in multi-field inflation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00519713" target="_blank" >RIV/68378271:_____/18:00519713 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1475-7516/2018/09/004" target="_blank" >https://doi.org/10.1088/1475-7516/2018/09/004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2018/09/004" target="_blank" >10.1088/1475-7516/2018/09/004</a>

Result language
angličtina
Original language name
Quantum entanglement in multi-field inflation
Original language description
We study the emergence of quantum entanglement in multi-field inflation. In this scenario, the perturbations of one field contribute to the observable curvature perturbation, while multi-field dynamics with the other fields affect the curvature perturbation through particle production and entanglement. We develop a general formalism which defines the quantum entanglement between the perturbations of the multiple fields both in the Heisenberg and Schrödinger pictures, and show that entanglement between different fields can arise dynamically in the context of multi-field inflationary scenarios. We also present a simple model in which a sudden change in the kinetic matrix of the scalar fields generates entanglement and an oscillatory feature appears in the power spectrum of the inflaton perturbation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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