No inflation in type IIA strings on rigid Calabi–Yau spaces; Progress of Theoretical and Experimental Physics (PTEP); Vol. 2017, iss. 8
| Parent link: | Progress of Theoretical and Experimental Physics (PTEP) Vol. 2017, iss. 8.— 2017.— [083E02, 13 р.] |
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| Izvleček: | Title screen We investigate whether cosmological inflation is possible in a class of flux compactifications of type IIA strings on rigid Calabi-Yau manifolds, when all perturbative string corrections are taken into account. We confine ourselves to the universal hypermultiplet and an Abelian vector multiplet, representing matter in four dimensions. Since all axions can be stabilized by D-instantons, we choose the dilaton and a Kähler modulus as the only running scalars. Though positivity of their scalar potential can be achieved, we find that there is no slow roll (ε>13/6ε>13/6), and no graceful exit because the scalar potential has the runaway behavior resulting in decompactification. We conclude that it is impossible to generate phenomenologically viable inflation in the given class of flux compactifications of type IIA strings without explicit breaking of the N=2N=2 local supersymmetry of the low-energy effective action. |
| Jezik: | angleščina |
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2017
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| Online dostop: | https://doi.org/10.1093/ptep/ptx094 |
| Format: | Elektronski Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657032 |
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| 200 | 1 | |a No inflation in type IIA strings on rigid Calabi–Yau spaces |f Yu. Wakimoto, S. V. Ketov | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 53 tit.] | ||
| 330 | |a We investigate whether cosmological inflation is possible in a class of flux compactifications of type IIA strings on rigid Calabi-Yau manifolds, when all perturbative string corrections are taken into account. We confine ourselves to the universal hypermultiplet and an Abelian vector multiplet, representing matter in four dimensions. Since all axions can be stabilized by D-instantons, we choose the dilaton and a Kähler modulus as the only running scalars. Though positivity of their scalar potential can be achieved, we find that there is no slow roll (ε>13/6ε>13/6), and no graceful exit because the scalar potential has the runaway behavior resulting in decompactification. We conclude that it is impossible to generate phenomenologically viable inflation in the given class of flux compactifications of type IIA strings without explicit breaking of the N=2N=2 local supersymmetry of the low-energy effective action. | ||
| 461 | |t Progress of Theoretical and Experimental Physics (PTEP) | ||
| 463 | |t Vol. 2017, iss. 8 |v [083E02, 13 р.] |d 2017 | ||
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| 610 | 1 | |a космологическая инфляция | |
| 700 | 1 | |a Wakimoto |b Yu. |g Yuki | |
| 701 | 1 | |a Ketov |b S. V. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1960- |g Sergey Vladimirovich |3 (RuTPU)RU\TPU\pers\36631 |9 19672 | |
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