Results 161 to 170 of about 75,052 (218)
Isotropic Loop Quantum Cosmology with Matter
, 2002 A free massless scalar field is coupled to homogeneous and isotropic loop quantum cosmology. The coupled model is investigated in the vicinity of the classical singularity, where discreteness is essential and where the quantum model is non-singular, as ...
A. Ashtekar +22 more
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Universal features of quantum bounce in loop quantum cosmology
Physics Letters B, 2017 In this Letter, we study analytically the evolutions of the flat Friedmann–Lemaitre–Robertson–Walker (FLRW) universe and its linear perturbations in the framework of the dressed metric approach in loop quantum cosmology (LQC). Assuming that the evolution
Tao Zhu +4 more
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Preinflationary Dynamics of Power-Law Potential in Loop Quantum Cosmology †
Universe, 2018 In this article, I mainly discuss the dynamics of the pre-inflationary Universe for the potential V ( ϕ ) ∝ ϕ n with n = 5 / 3 in the context of loop quantum cosmology, in which the big bang singularity is resolved by a non ...
M. Shahalam
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Loop quantum cosmology: IV. Discrete time evolution [PDF]
, 2001 Martin Bojowald
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Adiabatic and non-adiabatic perturbations for loop quantum cosmology
, 2011 We generalize the perturbations theory of loop quantum cosmology to a hydrodynamical form and define an effective curvature perturbation on an uniform density hypersurfaces $\zeta_e$. As in the classical cosmology, $\zeta_e$ should be gauge-invariant and
C. Rovell +6 more
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Loop Quantum Gravity Vacuum with Nondegenerate Geometry
Symmetry, Integrability and Geometry: Methods and Applications, 2012 In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry.
Hanno Sahlmann, Tim Koslowski
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The Hubble operator in isotropic loop quantum cosmology [PDF]
, 2003 Golam Mortuza Hossain
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A qualitative approach to semi-classical loop quantum cosmology [PDF]
, 2004 Gregory Vereshchagin
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Efficiently evaluating loop integrals in the EFTofLSS using QFT integrals with massive propagators
Journal of High Energy PhysicsWe develop a new way to analytically calculate loop integrals in the Effective Field Theory of Large Scale-Structure. Previous available methods show severe limitations beyond the one-loop power spectrum due to analytical challenges and computational and
Charalampos Anastasiou +3 more
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