The effects of SUSY on the emergent spacetime in the Lorentzian type IIB matrix model
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914857863872512 |
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| author | Hirasawa, Mitsuaki Anagnostopoulos, Konstantinos N. Azuma, Takehiro Hatakeyama, Kohta Nishimura, Jun Papadoudis, Stratos Tsuchiya, Asato |
| author_facet | Hirasawa, Mitsuaki Anagnostopoulos, Konstantinos N. Azuma, Takehiro Hatakeyama, Kohta Nishimura, Jun Papadoudis, Stratos Tsuchiya, Asato |
| contents | The Lorentzian type IIB matrix model is a promising candidate for a nonperturbative formulation of superstring theory. Recently we performed complex Langevin simulations by adding a Lorentz invariant mass term as an IR regulator and found a (1+1)-dimensional expanding spacetime with a Lorentzian signature emerging dynamically at late times when the fermionic contribution is omitted. Here we find that this is merely an artifact of the Lorentz boosts by showing that the spontaneous breaking of rotational symmetry is eliminated if one chooses a Lorentz frame appropriately. On the other hand, when we include the fermionic contribution, we find some evidence suggesting the emergence of a smooth (3+1)-dimensional expanding Lorentzian spacetime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_03491 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The effects of SUSY on the emergent spacetime in the Lorentzian type IIB matrix model Hirasawa, Mitsuaki Anagnostopoulos, Konstantinos N. Azuma, Takehiro Hatakeyama, Kohta Nishimura, Jun Papadoudis, Stratos Tsuchiya, Asato High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Lattice The Lorentzian type IIB matrix model is a promising candidate for a nonperturbative formulation of superstring theory. Recently we performed complex Langevin simulations by adding a Lorentz invariant mass term as an IR regulator and found a (1+1)-dimensional expanding spacetime with a Lorentzian signature emerging dynamically at late times when the fermionic contribution is omitted. Here we find that this is merely an artifact of the Lorentz boosts by showing that the spontaneous breaking of rotational symmetry is eliminated if one chooses a Lorentz frame appropriately. On the other hand, when we include the fermionic contribution, we find some evidence suggesting the emergence of a smooth (3+1)-dimensional expanding Lorentzian spacetime. |
| title | The effects of SUSY on the emergent spacetime in the Lorentzian type IIB matrix model |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2407.03491 |