Quantum vacuum effects on the formation of black holes
Abstract We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fate of the collapse process depends on the physical properties of the shell, including its rest and gravitationa...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-06-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2023)055 |
| _version_ | 1797675888178888704 |
|---|---|
| author | Moslem Shafiee Yousef Bahrampour |
| author_facet | Moslem Shafiee Yousef Bahrampour |
| author_sort | Moslem Shafiee |
| collection | DOAJ |
| description | Abstract We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fate of the collapse process depends on the physical properties of the shell, including its rest and gravitational masses. Investigating the conditions for the formation of black holes, we notice that quantum effects modify the geometry and structure of Schwarzschild space-time in such a way that black holes have two horizons, an inner and an outer horizon. If the gravitational mass of the shell is about that of an ordinary star, then in most cases, the semi-classical collapse will terminate in a singularity, and in general, quantum fluctuations are not strong enough to prevent the creation of the singularity. Although under certain conditions, it is possible to form a non-singular black hole, i.e., a regular black hole. In this way, the collapse stops at a radius much larger than the Planck length below the inner horizon, and the shell bounces and starts an expansion. |
| first_indexed | 2024-03-11T22:21:09Z |
| format | Article |
| id | doaj.art-9f06a19028344002a2d11955fb81f223 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T22:21:09Z |
| publishDate | 2023-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-9f06a19028344002a2d11955fb81f2232023-09-24T11:05:08ZengSpringerOpenJournal of High Energy Physics1029-84792023-06-012023611810.1007/JHEP06(2023)055Quantum vacuum effects on the formation of black holesMoslem Shafiee0Yousef Bahrampour1Faculty of Mathematics and Computer, Shahid Bahonar University of KermanFaculty of Mathematics and Computer, Shahid Bahonar University of KermanAbstract We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fate of the collapse process depends on the physical properties of the shell, including its rest and gravitational masses. Investigating the conditions for the formation of black holes, we notice that quantum effects modify the geometry and structure of Schwarzschild space-time in such a way that black holes have two horizons, an inner and an outer horizon. If the gravitational mass of the shell is about that of an ordinary star, then in most cases, the semi-classical collapse will terminate in a singularity, and in general, quantum fluctuations are not strong enough to prevent the creation of the singularity. Although under certain conditions, it is possible to form a non-singular black hole, i.e., a regular black hole. In this way, the collapse stops at a radius much larger than the Planck length below the inner horizon, and the shell bounces and starts an expansion.https://doi.org/10.1007/JHEP06(2023)055Black HolesSpacetime Singularities |
| spellingShingle | Moslem Shafiee Yousef Bahrampour Quantum vacuum effects on the formation of black holes Journal of High Energy Physics Black Holes Spacetime Singularities |
| title | Quantum vacuum effects on the formation of black holes |
| title_full | Quantum vacuum effects on the formation of black holes |
| title_fullStr | Quantum vacuum effects on the formation of black holes |
| title_full_unstemmed | Quantum vacuum effects on the formation of black holes |
| title_short | Quantum vacuum effects on the formation of black holes |
| title_sort | quantum vacuum effects on the formation of black holes |
| topic | Black Holes Spacetime Singularities |
| url | https://doi.org/10.1007/JHEP06(2023)055 |
| work_keys_str_mv | AT moslemshafiee quantumvacuumeffectsontheformationofblackholes AT yousefbahrampour quantumvacuumeffectsontheformationofblackholes |