Manifestation of quantum entanglement between harmonic oscillators in de Sitter
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866908406430826496 |
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| author | Chakraborty, Sumanta Mazumdar, Anupam Pradhan, Ritapriya |
| author_facet | Chakraborty, Sumanta Mazumdar, Anupam Pradhan, Ritapriya |
| contents | Two harmonic oscillators interacting through the exchange of a quantum field leads to non-zero entanglement between the two, which is absent for classical interaction. In this work, we determine the entanglement between two such harmonic oscillators living in an expanding universe. It turns out that, if the oscillators are within the Hubble horizon, with their frequencies are comparable to the rate of expansion of the universe, the entanglement is non-zero and significant. While, for oscillators outside the Hubble horizon, with oscillation frequencies much higher than the expansion rate, the entanglement is negligibly small. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_11422 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Manifestation of quantum entanglement between harmonic oscillators in de Sitter Chakraborty, Sumanta Mazumdar, Anupam Pradhan, Ritapriya General Relativity and Quantum Cosmology Quantum Physics Two harmonic oscillators interacting through the exchange of a quantum field leads to non-zero entanglement between the two, which is absent for classical interaction. In this work, we determine the entanglement between two such harmonic oscillators living in an expanding universe. It turns out that, if the oscillators are within the Hubble horizon, with their frequencies are comparable to the rate of expansion of the universe, the entanglement is non-zero and significant. While, for oscillators outside the Hubble horizon, with oscillation frequencies much higher than the expansion rate, the entanglement is negligibly small. |
| title | Manifestation of quantum entanglement between harmonic oscillators in de Sitter |
| topic | General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/2506.11422 |