Gravitino and Polonyi production in supergravity

Autor(es)

Addazi, Andrea ^[1] ; Ketov, V, Sergei ; Khlopov, Maxim Yu ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Fudan Univ, Dept Phys, 220 Handan Rd, Shanghai 200433 - Peoples R China

^[2] Natl Res Nucl Univ MEPHI, Moscow Engn Phys Inst, Ctr Cosmoparticle Phys Cosm, Kashirskoe Sh 31, Moscow 115409 - Russia

^[3] APC Lab, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13 - France

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 78, n. 8 AUG 11 2018.
• Citações Web of Science: 9

Resumo

We study production of gravitino and Polonyi particles in the minimal Starobinsky-Polonyi N = 1 supergravity with inflaton belonging to a massive vector super-multiplet. 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. (AU)

• Processo FAPESP: 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica
• Beneficiário: Nathan Jacob Berkovits
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais