Zobrazeno 1 - 10
of 6 423
pro vyhledávání: '"Loop quantum cosmology"'
Autor:
Mena Marugán, Guillermo A.1 (AUTHOR) antonio.vicente@iem.cfmac.csic.es, Vicente-Becerril, Antonio1 (AUTHOR), Yébana Carrilero, Jesús2 (AUTHOR) jesus.yebana@uib.es
Publikováno v:
Universe (2218-1997). Sep2024, Vol. 10 Issue 9, p365. 28p.
We investigate the implications of different quantization approaches in Loop Quantum Cosmology for the primordial power spectrum of tensor modes. Specifically, we consider the hybrid and dressed metric approaches to derive the effective mass that gov
Externí odkaz:
http://arxiv.org/abs/2409.18302
Autor:
Neves, Ria B.
The standard model of cosmology assumes a homogeneous and isotropic universe that undergoes a period of exponential expansion very early on, named inflation. This stretches quantum fluctuations from the onset of inflation to cosmological scales, whic
Externí odkaz:
http://arxiv.org/abs/2410.14435
Autor:
K, Roshna, Sreenath, V.
Observations by Planck indicate that CMB anisotropies are consistent with predictions of nearly Gaussian primordial perturbations as the one generated in slow-roll inflation. On the other hand, loop quantum cosmology (LQC) generates a non-Gaussian bi
Externí odkaz:
http://arxiv.org/abs/2410.00614
The issue of consistency is crucial in quantum gravity. It has recently been intensively addressed for effective symmetry-reduced models. In this article, we exhaustively study the anomaly freedom of effective loop quantum cosmology with generalized
Externí odkaz:
http://arxiv.org/abs/2409.06441
In loop quantum cosmology, the slow-roll inflation is generic, and when the kinetic energy of the scalar field dominates at the bounce, the evolution of the Friedmann-Lema\^itre-Robertson-Walker universe will go through three distinguishable epochs,
Externí odkaz:
http://arxiv.org/abs/2408.00316
Autor:
Wilson-Ewing, Edward
The effective dynamics of loop quantum gravity for marginally bound Lema\^itre-Tolman-Bondi spacetimes predict that the big-bang singularity is resolved and replaced by a cosmic bounce. Numerics show that these effective dynamics also homogenize smal
Externí odkaz:
http://arxiv.org/abs/2409.18889
Autor:
Swain, Suryakanta1 (AUTHOR), Sahoo, Gourishankar1 (AUTHOR), Nayak, Bibekananda2 (AUTHOR) bibekanandafm@gmail.com
Publikováno v:
Scientific Reports. 7/23/2024, Vol. 14 Issue 1, p1-10. 10p.
Autor:
Montese, Lucas M. V., Yokomizo, Nelson
The inflationary and pre-inflationary evolution of scalar modes of cosmological perturbations in a closed universe is analyzed for a loop quantum cosmology model with an inflationary regime consistent with the constraints on inflation derived from ob
Externí odkaz:
http://arxiv.org/abs/2406.11762
In this paper, we obtain novel traversable, static, and spherically symmetric wormhole solutions, derived from the effective energy density and isotropic pressure resulting from the Casimir effect, corrected by the Generalized Uncertainty Principle (
Externí odkaz:
http://arxiv.org/abs/2406.08250