Abstract

It is shown that it is possible to extend the application of \(\delta \mathcal{N}\) formalism to some special separable non-canonic cases. In this work, we extended the multi-brid idea to the multi-field separable model with a non-canonical kinetic term, mainly DBI (Dirac–Born–Infeld) action. Multi-brid stands for multi-component hybrid inflation which is based on δN formalism. To be more explicit, we considered the DBI model for two different limits, viz., speed limit and constant sound speed, as examples.

中文翻译：

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多品种DBI通货膨胀

摘要

结果表明，可以将\（\ delta \ mathcal {N} \）形式主义的应用扩展到某些特殊的可分离的非经典情况。在这项工作中，我们将非常规动力学项（主要是DBI（狄拉克-博恩-因费尔德）作用）的多辫子思想扩展到了多场可分离模型。多品种代表基于δN形式主义的多组分混合通胀。更明确地说，我们以两个不同的限制（即速度限制和恒定声速）为例考虑了DBI模型。