One-loop corrections to the primordial tensor spectrum from massless isocurvature fields

• المؤلف الرئيسي: Tan, Hai Siong
• مؤلفون آخرون: School of Physical and Mathematical Sciences
• التنسيق: مقال
• اللغة: English
• منشور في: 2020
• الموضوعات: Science::Physics; Classical Theories of Gravity; Cosmology of Theories Beyond the SM
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/145595
• المؤسسة: Nanyang Technological University

We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. Using the Schwinger-Keldysh formalism in cosmological perturbation theory, we employ dimensional regularization and cutoff regularization t...