Semantic Scholar Open Access 2016 13 sitasi

Anamorphic quasiperiodic universes in modified and Einstein gravity with loop quantum gravity corrections

Marcelo M. Amaral Raymond Aschheim L. Bubuianu K. Irwin S. Vacaru +1 lainnya

Abstrak

The goal of this work is to elaborate on new geometric methods of constructing exact and parametric quasiperiodic solutions for anamorphic cosmology models in modified gravity theories, MGTs, and general relativity, GR. There exist previously studied generic off-diagonal and diagonalizable cosmological metrics encoding gravitational and matter fields with quasicrystal like structures, QC, and holonomy corrections from loop quantum gravity, LQG. We apply the anholonomic frame deformation method, AFDM, in order to decouple the (modified) gravitational and matter field equations in general form. This allows us to find integral varieties of cosmological solutions determined by generating functions, effective sources, integration functions and constants. The coefficients of metrics and connections for such cosmological configurations depend, in general, on all spacetime coordinates and can be chosen to generate observable (quasi)-periodic/aperiodic/fractal/stochastic/(super) cluster/filament/polymer like (continuous, stochastic, fractal and/or discrete structures) in MGTs and/or GR. In this work, we study new classes of solutions for anamorphic cosmology with LQG holonomy corrections. Such solutions are characterized by nonlinear symmetries of generating functions for generic off-diagonal cosmological metrics and generalized connections, with possible nonholonomic constraints to Levi–Civita configurations and diagonalizable metrics depending only on a time like coordinate. We argue that anamorphic quasiperiodic cosmological models integrate the concept of quantum discrete spacetime, with certain gravitational QC-like vacuum and nonvacuum structures. And, that of a contracting universe that homogenizes, isotropizes and flattens without introducing initial conditions or multiverse problems.

Topik & Kata Kunci

Penulis (6)

M

Marcelo M. Amaral

R

Raymond Aschheim

L

L. Bubuianu

K

K. Irwin

S

S. Vacaru

D

Daniel John Woolridge

Format Sitasi

Amaral, M.M., Aschheim, R., Bubuianu, L., Irwin, K., Vacaru, S., Woolridge, D.J. (2016). Anamorphic quasiperiodic universes in modified and Einstein gravity with loop quantum gravity corrections. https://doi.org/10.1088/1361-6382/aa828a

Akses Cepat

Lihat di Sumber doi.org/10.1088/1361-6382/aa828a
Informasi Jurnal
Tahun Terbit
2016
Bahasa
en
Total Sitasi
13×
Sumber Database
Semantic Scholar
DOI
10.1088/1361-6382/aa828a
Akses
Open Access ✓