On stabilization of magnetically charged brane shell and over-extremality
Abstract In string theory, we can geometrically realize a metastable state by wrapping D5-branes and anti D5-branes to a singular manifold. We consider wrapping D3-branes to the internal space in this setup. These D3-branes dissolve into the domain wall, which interpolates true vacua and false vacua...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2025)179 |
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| author | Sohei Tsukahara |
| author_facet | Sohei Tsukahara |
| author_sort | Sohei Tsukahara |
| collection | DOAJ |
| description | Abstract In string theory, we can geometrically realize a metastable state by wrapping D5-branes and anti D5-branes to a singular manifold. We consider wrapping D3-branes to the internal space in this setup. These D3-branes dissolve into the domain wall, which interpolates true vacua and false vacua, forming a bound state. The remnant of the D3-branes can be seen as a background magnetic field on the domain wall, which appears to an observer in 4D spacetime as a magnetically charged, spherically symmetric shell. This brane shell has finite radii due to the nonlinearity peculiar to string theory, even at the probe level. We demonstrate a new stabilization mechanism of the brane shell in 4D spacetime. We add a general relativity-inspired gravitational correction to the brane shells and investigate the influence on its potential. As a result, the potential value at the horizon will be relatively larger than the potential minimum in parameter regions where the influence of gravity is large, and even non-perturbative instabilities can be removed. Moreover, we show the existence of over-extremal states such that (gQ)2 ≥ G 4 m 2 is satisfied in regions where the magnetic field is sufficiently large. At least in our model, this over-extremal shell cannot be completely stabilized by gravitational correction. This paper also addresses the dilemma between stabilizing and achieving an over-extremal state. |
| format | Article |
| id | doaj-art-19dd634cd933488b805d81fdcb698a8a |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-19dd634cd933488b805d81fdcb698a8a2025-02-09T12:07:12ZengSpringerOpenJournal of High Energy Physics1029-84792025-01-012025111810.1007/JHEP01(2025)179On stabilization of magnetically charged brane shell and over-extremalitySohei Tsukahara0Department of Physics, Kyushu UniversityAbstract In string theory, we can geometrically realize a metastable state by wrapping D5-branes and anti D5-branes to a singular manifold. We consider wrapping D3-branes to the internal space in this setup. These D3-branes dissolve into the domain wall, which interpolates true vacua and false vacua, forming a bound state. The remnant of the D3-branes can be seen as a background magnetic field on the domain wall, which appears to an observer in 4D spacetime as a magnetically charged, spherically symmetric shell. This brane shell has finite radii due to the nonlinearity peculiar to string theory, even at the probe level. We demonstrate a new stabilization mechanism of the brane shell in 4D spacetime. We add a general relativity-inspired gravitational correction to the brane shells and investigate the influence on its potential. As a result, the potential value at the horizon will be relatively larger than the potential minimum in parameter regions where the influence of gravity is large, and even non-perturbative instabilities can be removed. Moreover, we show the existence of over-extremal states such that (gQ)2 ≥ G 4 m 2 is satisfied in regions where the magnetic field is sufficiently large. At least in our model, this over-extremal shell cannot be completely stabilized by gravitational correction. This paper also addresses the dilemma between stabilizing and achieving an over-extremal state.https://doi.org/10.1007/JHEP01(2025)179D-BranesString and Brane Phenomenology |
| spellingShingle | Sohei Tsukahara On stabilization of magnetically charged brane shell and over-extremality Journal of High Energy Physics D-Branes String and Brane Phenomenology |
| title | On stabilization of magnetically charged brane shell and over-extremality |
| title_full | On stabilization of magnetically charged brane shell and over-extremality |
| title_fullStr | On stabilization of magnetically charged brane shell and over-extremality |
| title_full_unstemmed | On stabilization of magnetically charged brane shell and over-extremality |
| title_short | On stabilization of magnetically charged brane shell and over-extremality |
| title_sort | on stabilization of magnetically charged brane shell and over extremality |
| topic | D-Branes String and Brane Phenomenology |
| url | https://doi.org/10.1007/JHEP01(2025)179 |
| work_keys_str_mv | AT soheitsukahara onstabilizationofmagneticallychargedbraneshellandoverextremality |