A little excitement across the horizon
We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3 + 1)-dimensional Schwarzschild spacetime. In the Hartle-Hawking and Unruh states, the transition probability attains a small local extremum near the horizon-crossin...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170764 |
| _version_ | 1811695686844940288 |
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| author | Ng, Keith K. Zhang, Chen Louko Jorma Mann Robert B. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Ng, Keith K. Zhang, Chen Louko Jorma Mann Robert B. |
| author_sort | Ng, Keith K. |
| collection | NTU |
| description | We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3 + 1)-dimensional Schwarzschild spacetime. In the Hartle-Hawking and Unruh states, the transition probability attains a small local extremum near the horizon-crossing and is then moderately enhanced on approaching the singularity. In the Boulware state, the transition probability drops on approaching the horizon. The unexpected near-horizon extremum arises numerically from angular momentum superpositions, with a deeper physical explanation to be found. |
| first_indexed | 2024-10-01T07:27:25Z |
| format | Journal Article |
| id | ntu-10356/170764 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:27:25Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1707642023-10-09T15:35:22Z A little excitement across the horizon Ng, Keith K. Zhang, Chen Louko Jorma Mann Robert B. School of Physical and Mathematical Sciences Science::Physics Black Hole Radiation Curved Spacetime Quantum Field We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3 + 1)-dimensional Schwarzschild spacetime. In the Hartle-Hawking and Unruh states, the transition probability attains a small local extremum near the horizon-crossing and is then moderately enhanced on approaching the singularity. In the Boulware state, the transition probability drops on approaching the horizon. The unexpected near-horizon extremum arises numerically from angular momentum superpositions, with a deeper physical explanation to be found. Published version This work was supported in part by the Natural Science and Engineering Research Council of Canada and by Asian Office of Aerospace Research and Development Grant No. FA2386-19-1-4077. The work of JL was supported by United Kingdom Research and Innovation Science and Technology Facilities Council [Grant Nos. ST/P000703/1, ST/S002227/1]. 2023-10-09T01:57:54Z 2023-10-09T01:57:54Z 2022 Journal Article Ng, K. K., Zhang, C., Louko Jorma & Mann Robert B. (2022). A little excitement across the horizon. New Journal of Physics, 24(10), 103018-. https://dx.doi.org/10.1088/1367-2630/ac9547 1367-2630 https://hdl.handle.net/10356/170764 10.1088/1367-2630/ac9547 2-s2.0-85140909919 10 24 103018 en New Journal of Physics © 2022 The Author(s). This an open-access article distributed under the terms of Creative Commons License. application/pdf |
| spellingShingle | Science::Physics Black Hole Radiation Curved Spacetime Quantum Field Ng, Keith K. Zhang, Chen Louko Jorma Mann Robert B. A little excitement across the horizon |
| title | A little excitement across the horizon |
| title_full | A little excitement across the horizon |
| title_fullStr | A little excitement across the horizon |
| title_full_unstemmed | A little excitement across the horizon |
| title_short | A little excitement across the horizon |
| title_sort | little excitement across the horizon |
| topic | Science::Physics Black Hole Radiation Curved Spacetime Quantum Field |
| url | https://hdl.handle.net/10356/170764 |
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