Quantum nature of the big bang: Improved dynamics
نویسندگان
چکیده
منابع مشابه
Quantum Nature of the Big Bang: Improved dynamics
An improved Hamiltonian constraint operator is introduced in loop quantum cosmology. Quantum dynamics of the spatially flat, isotropic model with a massless scalar field is then studied in detail using analytical and numerical methods. The scalar field continues to serve as ‘emergent time’, the big bang is again replaced by a quantum bounce, and quantum evolution remains deterministic across th...
متن کاملQuantum Nature of the Big Bang in Loop Quantum Cosmology
A central feature of general relativity is that gravity is encoded in the very geometry of space-time. Loop quantum gravity is a non-perturbative approach to unifying general relativity with quantum physics while retaining this interplay between geometry and gravity [1, 2, 3]. There is no background space-time; matter as well as geometry are ‘quantum from birth’. Effects of quantum geometry are...
متن کاملIMPROVED BIG BANG-BIG CRUNCH ALGORITHM FOR OPTIMAL DIMENSIONAL DESIGN OF STRUCTURAL WALLS SYSTEM
Among the different lateral force resisting systems, shear walls are of appropriate stiffness and hence are extensively employed in the design of high-rise structures. The architectural concerns regarding the safety of these structures have further widened the application of coupled shear walls. The present study investigated the optimal dimensional design of coupled shear walls based on the im...
متن کاملAn Improved Big Bang-Big Crunch Algorithm for Estimating Three-Phase Induction Motors Efficiency
Nowadays, the most generated electrical energy is consumed by three-phase induction motors. Thus, in order to carry out preventive measurements and maintenances and eventually employing high-efficiency motors, the efficiency evaluation of induction motors is vital. In this paper, a novel and efficient method based on Improved Big Bang-Big Crunch (I-BB-BC) Algorithm is presented for efficiency e...
متن کاملEffective Dynamics of the Matrix Big Bang
We study the leading quantum effects in the recently introduced Matrix Big Bang model. This amounts to a study of supersymmetric Yang-Mills theory compactified on the Milne orbifold. We find a one-loop potential that decays near the Big Bang. More surprisingly, the potential decays very rapidly at late times where it appears to be generated by D-brane effects. Usually, general covariance constr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.74.084003