| 000 | 02927nlm1a2200421 4500 | ||
|---|---|---|---|
| 001 | 664585 | ||
| 005 | 20231030041935.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\35769 | ||
| 090 | _a664585 | ||
| 100 | _a20210428a2021 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aCH | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aMulti-Field versus Single-Field in the Supergravity Models of Inflation and Primordial Black Holes _fS. V. Ketov |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: 97 tit.] | ||
| 330 | _aWe review the models unifying inflation and Primordial Black Hole (PBH) formation, which are based on the modified (Starobinsky-type) supergravity. We begin with the basic (Starobinsky) inflationary model of modified gravity and its alpha-attractor-type generalizations for PBH production, and recall how all those single-field models can be embedded into the minimal supergravity. Then, we focus on the effective two-field models arising from the modified (Starobinsky-type) supergravity and compare them to the single-field models under review. Those two-field models describe double inflation whose first stage is driven by Starobinsky’s scalaron and whose second stage is driven by another scalar belonging to the supergravity multiplet. The power spectra are numerically computed, and it is found that the ultra-slow-roll regime gives rise to the enhancement (peak) in the scalar power spectrum leading to an efficient PBH formation. The resulting PBH masses and their density fraction (as part of dark matter) are found to be in agreement with cosmological observations. The PBH-induced gravitational waves, if any, are shown to be detectable by the ground-based and space-based gravitational interferometers under construction. | ||
| 461 | _tUniverse | ||
| 463 |
_tVol. 7, iss. 5 _v[115, 28 p.] _d2021 |
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| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _ainflation | |
| 610 | 1 | _aprimordial black holes | |
| 610 | 1 | _asupergravity | |
| 610 | 1 | _adark matter | |
| 610 | 1 | _aинфляция | |
| 610 | 1 | _aчерные дыры | |
| 610 | 1 | _aсупергравитация | |
| 610 | 1 | _aтемная материя | |
| 700 | 1 |
_aKetov _bS. V. _cphysicist _cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences _f1960- _gSergey Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\36631 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа физики высокоэнергетических процессов _c(2017- ) _h8118 _2stltpush _3(RuTPU)RU\TPU\col\23551 |
| 801 | 2 |
_aRU _b63413507 _c20211209 _gRCR |
|
| 856 | 4 | 0 | _uhttp://earchive.tpu.ru/handle/11683/69103 |
| 856 | 4 | 0 | _uhttps://doi.org/10.3390/universe7050115 |
| 942 | _cCF | ||