دورية أكاديمية

A Loop Quantum-Corrected Family of Chiral Cosmology Models

التفاصيل البيبلوغرافية
العنوان: A Loop Quantum-Corrected Family of Chiral Cosmology Models
المؤلفون: Luis Rey Díaz-Barrón, Abraham Espinoza-García, Sinuhé Alejandro Pérez-Payán, J. Socorro
المصدر: Universe, Vol 10, Iss 2, p 88 (2024)
بيانات النشر: MDPI AG, 2024.
سنة النشر: 2024
المجموعة: LCC:Elementary particle physics
مصطلحات موضوعية: quantum cosmology, chiral fields, k-essence, loop quantum cosmology, Elementary particle physics, QC793-793.5
الوصف: We construct and examine a holonomy-corrected chiral fields model of cosmological relevance. Specifically, we holonomize the Hamiltonian corresponding to a quintom field scenario with additional kinetic interaction (governed by the constant chiral metric, mab) on a flat FLRW background and contrast the resulting model with the corresponding purely classical system. In particular, it is shown that the single LQC bouncing stage is ensured to be realized, provided the full chiral kinetic energy function does not change sign during evolution. (As preparation, a particularly simple k-essence field is examined within the effective LQC scheme; some exact solutions are obtained in the process.) Additionally, under the said assumption, it is established that the landmark bouncing mechanism of standard (effective) LQC is still guaranteed to be featured even when taking any finite number of fields ϕ1,…ϕm and mab to be dependent on such fields (the particular zero-potential case corresponding to a family of simple purely kinetic k-essence multi-field cosmology models).
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2218-1997
Relation: https://www.mdpi.com/2218-1997/10/2/88; https://doaj.org/toc/2218-1997
DOI: 10.3390/universe10020088
URL الوصول: https://doaj.org/article/d3e948e98b754c479ae161a710be0502
رقم الأكسشن: edsdoj.3e948e98b754c479ae161a710be0502
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:22181997
DOI:10.3390/universe10020088