Dark matter and inflation in R+ζR2 supergravity

Addazi, Andrea; Khlopov, Maxim Yu.

doi:10.1016/j.physletb.2016.12.044

Cited by 24 publications

(16 citation statements)

References 62 publications

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“…[28,29], whereas the gravitino production sourced by inflation was considered in Refs. [30,31,32], though without specifying a particular model. In this paper we apply the methods of Refs.…”

Section: Introductionmentioning

confidence: 99%

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Gravitino and Polonyi production in supergravity

2018

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We study production of gravitino and Polonyi particles in the minimal Starobinsky-Polonyi N = 1 supergravity with inflaton belonging to a massive vector supermultiplet. Our model has only one free parameter given by the scale of spontaneous SUSY breaking triggered by Polonyi chiral superfield. The vector supermultiplet generically enters the action non-minimally, via an arbitrary real function. This function is chosen to generate the inflaton scalar potential of the Starobinsky model. Our supergravity model can be reformulated as an abelian supersymmetric gauge theory with the vector gauge superfield coupled to two (Higgs and Polonyi) chiral superfields interacting with supergravity, where the U (1) gauge symmetry is spontaneously broken. We find that Polonyi and gravitino particles are efficiently produced during inflation, and estimate their masses and the reheating temperature. After inflation, perturbative decay of inflaton also produces Polonyi particles that rapidly decay into gravitinos. As a result, a coherent picture of inflation and dark matter emerges, where the abundance of produced gravitinos after inflation fits the CMB constraints as a Super Heavy Dark Matter (SHDM) candidate. Our scenario avoids the notorous gravitino and Polonyi problems with the Big Bang Nucleosynthesis (BBN) and DM overproduction.

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Section: Introductionmentioning

confidence: 99%

“…In this paper we apply the methods of Refs. [30,31,32] to the specific Starobinsky-Polonyi supergravity model proposed in Refs. [10,11].…”

Section: Introductionmentioning

confidence: 99%

Gravitino and Polonyi production in supergravity

2018

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“…Surprisingly, the study of explicit interactions of the inflaton with low energy phenomenology has been rather poorly studied in the literature or to some extent fine-tuned through an extensive use of non minimal coupling to gravity or gauge corrections [30][31][32][33][34][35][36][37][38][39][40][41]. Attempts to incorporate inflation within a context of low scale supersymmetry breaking [44] has however shown that a complete description of low energy phenomenology of an inflation model can lead to rich constraints relating primordial cosmology to LHC physics.…”

Section: Jhep12(2017)072mentioning

confidence: 99%

The inflaton portal to dark matter

Heurtier

2017

J. High Energ. Phys.

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We consider the possibility that the inflaton is part of the dark sector and interacts with the standard model through a portal interaction with a heavy complex scalar field in equilibrium with the standard model at high energies. The inflaton and dark matter are encapsulated in a single complex field and both scalar sectors are charged under different (approximate) global U(1)'s such that the dark matter, as well as the visible pseudo-scalar are taken to be relatively light, as pseudo Nambu-Goldstone bosons of the theory. The dark matter relic density is populated by Freeze-In productions through the inflaton portal. In particular, after the reheating, production of dark matter by inflaton decay is naturally suppressed thanks to Planck stringent constraints on the dark quartic coupling, therefore preserving the non thermal scenario from any initial condition tuning.

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“…f (R) theory has several successful applications in the domain of cosmology [46][47][48][49][50]. However, it should be associated with other tests to achieve the success of GR in the solar system [51].…”

Section: Introductionmentioning

confidence: 99%

Higher Dimensional Rotating Black Hole Solutions in Quadratic f(R) Gravitational Theory and the Conserved Quantities

Nashed

Bamba

2021

Entropy

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We explore the quadratic form of the f(R)=R+bR2 gravitational theory to derive rotating N-dimensions black hole solutions with ai,i≥1 rotation parameters. Here, R is the Ricci scalar and b is the dimensional parameter. We assumed that the N-dimensional spacetime is static and it has flat horizons with a zero curvature boundary. We investigated the physics of black holes by calculating the relations of physical quantities such as the horizon radius and mass. We also demonstrate that, in the four-dimensional case, the higher-order curvature does not contribute to the black hole, i.e., black hole does not depend on the dimensional parameter b, whereas, in the case of N>4, it depends on parameter b, owing to the contribution of the correction R2 term. We analyze the conserved quantities, energy, and angular-momentum, of black hole solutions by applying the relocalization method. Additionally, we calculate the thermodynamic quantities, such as temperature and entropy, and examine the stability of black hole solutions locally and show that they have thermodynamic stability. Moreover, the calculations of entropy put a constraint on the parameter b to be b<116Λ to obtain a positive entropy.

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Dark matter and inflation in R+ζR2 supergravity

Cited by 24 publications

References 62 publications

Gravitino and Polonyi production in supergravity

Gravitino and Polonyi production in supergravity

The inflaton portal to dark matter

Higher Dimensional Rotating Black Hole Solutions in Quadratic f(R) Gravitational Theory and the Conserved Quantities

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