We propose a new field theory mechanism for generating an effective trans-Planckian decay constant from sub-Planckian ones. Using the minimal two axions and a hierarchy between two axion decay constants is sufficient for realizing inflation through nonperturbative effects only and with minimal tuning. The inflationary motion is kept entirely within a sub-Planckian domain. We outline possible strategies of embedding the model in a string theory setup.
Hierarchical Axion Inflation / Ben-Dayan, Ido; SOARES VERISSIMO GIL PEDRO, FRANCISCO MANUEL; Westphal, Alexander. - In: PHYSICAL REVIEW LETTERS. - ISSN 1079-7114. - ELETTRONICO. - 113:(2014), pp. 1-5. [10.1103/PhysRevLett.113.261301]
Hierarchical Axion Inflation
Soares Verissimo Gil Pedro, Francisco;
2014
Abstract
We propose a new field theory mechanism for generating an effective trans-Planckian decay constant from sub-Planckian ones. Using the minimal two axions and a hierarchy between two axion decay constants is sufficient for realizing inflation through nonperturbative effects only and with minimal tuning. The inflationary motion is kept entirely within a sub-Planckian domain. We outline possible strategies of embedding the model in a string theory setup.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
