Scanning of the supersymmetry breaking scale and the gravitino mass in supergravity

被引：30

作者：

Farakos, Fotis ^{[1
,2
]}

Kehagias, Alex ^{[3
]}

Racco, Davide ^{[4
,5
]}

Riotto, Antonio ^{[4
,5
]}

机构：

[1] Univ Padua, Dipartimento Fis Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy

[2] Ist Nazl Fis Nucl, Sez Padova, Via Marzolo 8, I-35131 Padua, Italy

[3] Natl Tech Univ Athens, Dept Phys, Zografou Campus, Athens 15780, Greece

[4] Dept Theoret Phys, 24 Quai E Ansermet, CH-1211 Geneva 4, Switzerland

[5] CAP, 24 Quai E Ansermet, CH-1211 Geneva 4, Switzerland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 06期

基金：

瑞士国家科学基金会;

关键词：

p-branes; Supergravity Models; Supersymmetry Breaking; COSMOLOGICAL CONSTANT; NEUTRALIZATION;

D O I：

10.1007/JHEP06(2016)120

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We consider the minimal three-form N = 1 supergravity coupled to nilpotent three-form chiral superfields. The supersymmetry breaking is sourced by the three-forms of the chiral multiplets, while the value of the gravitino mass is controlled by the three-form of the supergravity multiplet. The three-forms can nucleate membranes which scan both the supersymmetry breaking scale and the gravitino mass. The peculiar supergravity feature that the cosmological constant is the sum of a positive contribution from the supersymmetry breaking scale and a negative contribution from the gravitino mass makes the cosmological constant jump. This can lead to a phenomenologically allowed small value of the cosmological constant even though the supersymmetry breaking scale and the gravitino mass are dynamically large.

引用

页码：1 / 20

页数：20

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