Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Sabir Ramazanov"'
Publikováno v:
Physics Letters B, Vol 794, Iss , Pp 69-76 (2019)
We study in detail the recently proposed mechanism of generating superheavy Dark Matter with the mass larger than the Hubble rate at the end of inflation. A real scalar field constituting Dark Matter linearly couples to the inflaton. As a result of t
Externí odkaz:
https://doaj.org/article/c928cf6da5b6439ea0800f9ff85fa616
Publikováno v:
Physics Letters B, Vol 792, Iss , Pp 228-232 (2019)
We introduce a class of non-supersymmetric models explaining baryogenesis a la Affleck–Dine, which use a decay of two superheavy scalar fields with close masses. These scalars acquire non-zero expectation values during inflation through linear coup
Externí odkaz:
https://doaj.org/article/ecf54e2f0a3340809f27826660a9f783
Autor:
Eugeny Babichev, Sabir Ramazanov
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 8, Pp 1-18 (2017)
Abstract Both k-essence and the pressureless perfect fluid develop caustic singularities at finite time. We further explore the connection between the two and show that they belong to the same class of models, which admits the caustic free completion
Externí odkaz:
https://doaj.org/article/f66c8108caab4ffb8cdacfdd7a682bb5
We study black holes in a modified gravity scenario involving a scalar field quadratically coupled to the Gauss-Bonnet invariant. The scalar is assumed to be in a spontaneously broken phase at spatial infinity due to a bare Higgs-like potential. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26466e78ead89d415cc18ddfada108c8
http://arxiv.org/abs/2207.03944
http://arxiv.org/abs/2207.03944
Appearance of cosmic strings in the early Universe is a common manifestation of new physics typically linked to some high energy scale. In this paper, we discuss a different situation, where a model underlying cosmic string formation is approximately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f27882b83bde857c9f50c063595cd25a
http://arxiv.org/abs/2108.05377
http://arxiv.org/abs/2108.05377
Publikováno v:
Physics Letters B
Physics Letters B, Elsevier, 2019, 792, pp.228-232. ⟨10.1016/j.physletb.2019.03.046⟩
Phys.Lett.B
Phys.Lett.B, 2019, 792, pp.228-232. ⟨10.1016/j.physletb.2019.03.046⟩
Physics Letters
Physics Letters B, Vol 792, Iss, Pp 228-232 (2019)
Physics Letters B, Elsevier, 2019, 792, pp.228-232. ⟨10.1016/j.physletb.2019.03.046⟩
Phys.Lett.B
Phys.Lett.B, 2019, 792, pp.228-232. ⟨10.1016/j.physletb.2019.03.046⟩
Physics Letters
Physics Letters B, Vol 792, Iss, Pp 228-232 (2019)
We introduce a class of non-supersymmetric models explaining baryogenesis a la Affleck-Dine, which use a decay of two superheavy scalar fields with close masses. These scalars acquire non-zero expectation values during inflation through linear coupli
Primordial magnetic fields are often thought to be the early Universe seeds that have bloomed into what we observe today as galactic and extra-galactic magnetic fields. Owing to their minuscule strength, primordial magnetic fields are very hard to de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69e1d8c0c5a5ea276aa93b1560ecb4d2
http://cds.cern.ch/record/2742573
http://cds.cern.ch/record/2742573
Publikováno v:
JCAP
JCAP, 2020, 09, pp.059. ⟨10.1088/1475-7516/2020/09/059⟩
JCAP, 2020, 09, pp.059. ⟨10.1088/1475-7516/2020/09/059⟩
We discuss the gravitational creation of superheavy particles $\chi$ in an inflationary scenario with a quartic potential and a non-minimal coupling between the inflaton $\varphi$ and the Ricci curvature: $\xi \varphi^2 R/2$. We show that for large c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d788857ef5ce8276609071c7a7533d77
http://arxiv.org/abs/2006.02225
http://arxiv.org/abs/2006.02225
Publikováno v:
Phys.Lett.B
Phys.Lett.B, 2019, 794, pp.69-76. ⟨10.1016/j.physletb.2019.05.030⟩
Physics Letters B
Physics Letters B, Elsevier, 2019, 794, pp.69-76. ⟨10.1016/j.physletb.2019.05.030⟩
Physics Letters
Physics Letters B, Vol 794, Iss, Pp 69-76 (2019)
Phys.Lett.B, 2019, 794, pp.69-76. ⟨10.1016/j.physletb.2019.05.030⟩
Physics Letters B
Physics Letters B, Elsevier, 2019, 794, pp.69-76. ⟨10.1016/j.physletb.2019.05.030⟩
Physics Letters
Physics Letters B, Vol 794, Iss, Pp 69-76 (2019)
We study in detail the recently proposed mechanism of generating superheavy Dark Matter with the mass larger than the Hubble rate at the end of inflation. A real scalar field constituting Dark Matter linearly couples to the inflaton. As a result of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84432bb7881fc93acbdf5710d87dddf3
https://hal.archives-ouvertes.fr/hal-01965337
https://hal.archives-ouvertes.fr/hal-01965337
Publikováno v:
Phys.Rev.D
Phys.Rev.D, 2019, 100 (10), pp.104051. ⟨10.1103/PhysRevD.100.104051⟩
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (10), pp.104051. ⟨10.1103/PhysRevD.100.104051⟩
Phys.Rev.D, 2019, 100 (10), pp.104051. ⟨10.1103/PhysRevD.100.104051⟩
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (10), pp.104051. ⟨10.1103/PhysRevD.100.104051⟩
We discuss the Damour--Esposito-Far\`ese model of gravity, which predicts the spontaneous scalarization of neutron stars in a certain range of parameter space. In the cosmological setup, the scalar field responsible for scalarization is subject to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86dc5d3e03d6ca03ee403d2a3cd210ab