The Relative Entropy of One Graviton Creation in Early Universe
| Autor: | A Trenggana, F P Zen |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 2243:012098 |
| ISSN: | 1742-6596 1742-6588 |
| Popis: | The detection of nonclassicality of primordial gravitational waves (PGWs) is one way to prove the quantum theory of gravity. The nonclassical feature can be seen as a non-gaussianity, that could happen if there is a graviton creation in a squeezed state of Bunch-Davies vacuum. This condition would also produce an entanglement state. In this paper, we study that non-gaussianity by using relative entropy as a measurement. We find that, when the value of α (the entanglement constant) is near to one, the non-gaussianity would get its highest value. For the presence of matter field, the non-gaussianity still has the same characteristic for different values of α. But, in this case, the relative entropy value is constant for every value of the squeezed parameter. |
| Databáze: | OpenAIRE |
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